diff --git a/app/build.gradle b/app/build.gradle
index 180df1a6..8d10ce92 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,8 +27,8 @@ android {
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 21
         targetSdkVersion 34
-        versionCode 143
-        versionName "2.3.3"
+        versionCode 144
+        versionName "2.3.4"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         resValue "string", "app_name", "Wulkanowy"
@@ -163,7 +163,7 @@ play {
     track = 'production'
     releaseStatus = ReleaseStatus.IN_PROGRESS
     userFraction = 0.99d
-    updatePriority = 3
+    updatePriority = 1
     enabled.set(false)
 }
 
@@ -193,7 +193,7 @@ ext {
 }
 
 dependencies {
-    implementation 'io.github.wulkanowy:sdk:2.3.5'
+    implementation 'io.github.wulkanowy:sdk:2.3.6'
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'
 
@@ -238,6 +238,7 @@ dependencies {
     implementation 'com.squareup.retrofit2:retrofit:2.9.0'
     implementation "com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:1.0.0"
     implementation "com.squareup.okhttp3:logging-interceptor:4.12.0"
+    implementation "com.squareup.okhttp3:okhttp-urlconnection:4.12.0"
 
     implementation "com.jakewharton.timber:timber:5.0.1"
     implementation 'com.github.Faierbel:slf4j-timber:2.0'
diff --git a/app/src/main/java/io/github/wulkanowy/data/DataModule.kt b/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
index bea3f706..950e817b 100644
--- a/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
@@ -21,6 +21,7 @@ import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.RemoteConfigHelper
+import io.github.wulkanowy.utils.WebkitCookieManagerProxy
 import kotlinx.serialization.json.Json
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
@@ -43,6 +44,7 @@ internal class DataModule {
             buildTag = android.os.Build.MODEL
             userAgentTemplate = remoteConfig.userAgentTemplate
             setSimpleHttpLogger { Timber.d(it) }
+            setAdditionalCookieManager(WebkitCookieManagerProxy())
 
             // for debug only
             addInterceptor(chuckerInterceptor, network = true)
diff --git a/app/src/main/java/io/github/wulkanowy/data/Resource.kt b/app/src/main/java/io/github/wulkanowy/data/Resource.kt
index 2c5bf0ea..d7c2aeed 100644
--- a/app/src/main/java/io/github/wulkanowy/data/Resource.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/Resource.kt
@@ -1,6 +1,16 @@
 package io.github.wulkanowy.data
 
-import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.emitAll
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.flow.takeWhile
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import timber.log.Timber
@@ -131,7 +141,7 @@ inline fun <ResultType, RequestType> networkBoundResource(
             query().map { Resource.Success(filterResult(it)) }
         } catch (throwable: Throwable) {
             onFetchFailed(throwable)
-            query().map { Resource.Error(throwable) }
+            flowOf(Resource.Error(throwable))
         }
     } else {
         query().map { Resource.Success(filterResult(it)) }
@@ -165,7 +175,7 @@ inline fun <ResultType, RequestType, T> networkBoundResource(
             query().map { Resource.Success(mapResult(it)) }
         } catch (throwable: Throwable) {
             onFetchFailed(throwable)
-            query().map { Resource.Error(throwable) }
+            flowOf(Resource.Error(throwable))
         }
     } else {
         query().map { Resource.Success(mapResult(it)) }
diff --git a/app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationSchedulerHelper.kt b/app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationSchedulerHelper.kt
index 42078d03..aae7882f 100644
--- a/app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationSchedulerHelper.kt
+++ b/app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationSchedulerHelper.kt
@@ -65,8 +65,6 @@ class TimetableNotificationSchedulerHelper @Inject constructor(
                     range = lesson.start..lesson.end,
                     requestCode = getRequestCode(lesson.start, studentId)
                 )
-
-                Timber.d("TimetableNotification canceled: type 1 & 2, subject: ${lesson.subject}, start: ${lesson.start}, student: $studentId")
             }
         }
     }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.kt b/app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.kt
index 026d38de..29996db7 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.kt
@@ -11,6 +11,7 @@ import com.google.android.material.snackbar.Snackbar
 import com.google.android.material.snackbar.Snackbar.LENGTH_LONG
 import io.github.wulkanowy.R
 import io.github.wulkanowy.ui.modules.auth.AuthDialog
+import io.github.wulkanowy.ui.modules.captcha.CaptchaDialog
 import io.github.wulkanowy.ui.modules.login.LoginActivity
 import io.github.wulkanowy.utils.FragmentLifecycleLogger
 import io.github.wulkanowy.utils.getThemeAttrColor
@@ -77,6 +78,10 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
             .show()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        CaptchaDialog.newInstance(url).show(supportFragmentManager, "captcha_dialog")
+    }
+
     override fun showDecryptionFailedDialog() {
         MaterialAlertDialogBuilder(this)
             .setTitle(R.string.main_session_expired)
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/BaseDialogFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/base/BaseDialogFragment.kt
index 50e4b05d..e63887b8 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/BaseDialogFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/BaseDialogFragment.kt
@@ -8,7 +8,6 @@ import android.widget.Toast
 import androidx.fragment.app.DialogFragment
 import androidx.viewbinding.ViewBinding
 import com.google.android.material.elevation.SurfaceColors
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.utils.AnalyticsHelper
 import io.github.wulkanowy.utils.lifecycleAwareVariable
 import javax.inject.Inject
@@ -32,6 +31,10 @@ abstract class BaseDialogFragment<VB : ViewBinding> : DialogFragment(), BaseView
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
@@ -45,7 +48,7 @@ abstract class BaseDialogFragment<VB : ViewBinding> : DialogFragment(), BaseView
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun showErrorDetailsDialog(error: Throwable) {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/BaseFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/base/BaseFragment.kt
index cec2670b..ba346131 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/BaseFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/BaseFragment.kt
@@ -7,7 +7,6 @@ import androidx.viewbinding.ViewBinding
 import com.google.android.material.snackbar.Snackbar
 import com.google.android.material.snackbar.Snackbar.LENGTH_LONG
 import io.github.wulkanowy.R
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.utils.lifecycleAwareVariable
 
 abstract class BaseFragment<VB : ViewBinding>(@LayoutRes layoutId: Int) : Fragment(layoutId),
@@ -43,12 +42,16 @@ abstract class BaseFragment<VB : ViewBinding>(@LayoutRes layoutId: Int) : Fragme
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun openClearLoginView() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.kt
index ee92e4fc..d4cb20ca 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.kt
@@ -29,6 +29,7 @@ open class BasePresenter<T : BaseView>(
         errorHandler.apply {
             showErrorMessage = view::showError
             onExpiredCredentials = view::showExpiredCredentialsDialog
+            onCaptchaVerificationRequired = view::onCaptchaVerificationRequired
             onDecryptionFailed = view::showDecryptionFailedDialog
             onNoCurrentStudent = view::openClearLoginView
             onPasswordChangeRequired = view::showChangePasswordSnackbar
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/BaseView.kt b/app/src/main/java/io/github/wulkanowy/ui/base/BaseView.kt
index e97a6ab9..88d5754f 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/BaseView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/BaseView.kt
@@ -8,6 +8,8 @@ interface BaseView {
 
     fun showExpiredCredentialsDialog()
 
+    fun onCaptchaVerificationRequired(url: String?)
+
     fun showDecryptionFailedDialog()
 
     fun showAuthDialog()
diff --git a/app/src/main/java/io/github/wulkanowy/ui/base/ErrorHandler.kt b/app/src/main/java/io/github/wulkanowy/ui/base/ErrorHandler.kt
index 56905709..e17c0c9e 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/base/ErrorHandler.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/base/ErrorHandler.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.data.exceptions.NoCurrentStudentException
 import io.github.wulkanowy.sdk.scrapper.exception.AuthorizationRequiredException
+import io.github.wulkanowy.sdk.scrapper.exception.CloudflareVerificationException
 import io.github.wulkanowy.sdk.scrapper.login.BadCredentialsException
 import io.github.wulkanowy.sdk.scrapper.login.PasswordChangeRequiredException
 import io.github.wulkanowy.utils.getErrorString
@@ -25,6 +26,8 @@ open class ErrorHandler @Inject constructor(@ApplicationContext protected val co
 
     var onAuthorizationRequired: () -> Unit = {}
 
+    var onCaptchaVerificationRequired: (url: String?) -> Unit = {}
+
     fun dispatch(error: Throwable) {
         Timber.e(error, "An exception occurred while the Wulkanowy was running")
         proceed(error)
@@ -38,6 +41,7 @@ open class ErrorHandler @Inject constructor(@ApplicationContext protected val co
             is BadCredentialsException -> onExpiredCredentials()
             is NoCurrentStudentException -> onNoCurrentStudent()
             is AuthorizationRequiredException -> onAuthorizationRequired()
+            is CloudflareVerificationException -> onCaptchaVerificationRequired(error.originalUrl)
         }
     }
 
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt
new file mode 100644
index 00000000..ed8293a9
--- /dev/null
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt
@@ -0,0 +1,86 @@
+package io.github.wulkanowy.ui.modules.captcha
+
+import android.annotation.SuppressLint
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import androidx.core.os.bundleOf
+import dagger.hilt.android.AndroidEntryPoint
+import io.github.wulkanowy.R
+import io.github.wulkanowy.databinding.DialogCaptchaBinding
+import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.ui.base.BaseDialogFragment
+import timber.log.Timber
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
+
+    @Inject
+    lateinit var sdk: Sdk
+
+    private var webView: WebView? = null
+
+    companion object {
+        const val CAPTCHA_SUCCESS = "captcha_success"
+        private const val CAPTCHA_URL = "captcha_url"
+        private const val CAPTCHA_CHECK_JS = "document.getElementById('challenge-running') == null"
+
+        fun newInstance(url: String?): CaptchaDialog {
+            return CaptchaDialog().apply {
+                arguments = bundleOf(CAPTCHA_URL to url)
+            }
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View = DialogCaptchaBinding.inflate(inflater).apply { binding = this }.root
+
+    @SuppressLint("SetJavaScriptEnabled")
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        isCancelable = false
+        binding.captchaRefresh.setOnClickListener {
+            binding.captchaWebview.loadUrl(arguments?.getString(CAPTCHA_URL).orEmpty())
+        }
+        binding.captchaClose.setOnClickListener { dismiss() }
+
+        with(binding.captchaWebview) {
+            webView = this
+            with(settings) {
+                javaScriptEnabled = true
+                userAgentString = sdk.userAgent
+            }
+
+            webViewClient = object : WebViewClient() {
+                override fun onPageFinished(view: WebView?, url: String?) {
+                    view?.evaluateJavascript(CAPTCHA_CHECK_JS) {
+                        if (it == "true") {
+                            onChallengeAccepted()
+                        }
+                    }
+                }
+            }
+
+            loadUrl(arguments?.getString(CAPTCHA_URL).orEmpty())
+        }
+    }
+
+    private fun onChallengeAccepted() {
+        runCatching { parentFragmentManager.setFragmentResult(CAPTCHA_SUCCESS, bundleOf()) }
+            .onFailure { Timber.e(it) }
+        showMessage(getString(R.string.captcha_verified_message))
+        dismissAllowingStateLoss()
+    }
+
+    override fun onDestroy() {
+        webView?.destroy()
+        super.onDestroy()
+    }
+}
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardFragment.kt
index 301262a0..bedbce23 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardFragment.kt
@@ -18,6 +18,7 @@ import io.github.wulkanowy.databinding.FragmentDashboardBinding
 import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.account.accountdetails.AccountDetailsFragment
 import io.github.wulkanowy.ui.modules.attendance.summary.AttendanceSummaryFragment
+import io.github.wulkanowy.ui.modules.captcha.CaptchaDialog.Companion.CAPTCHA_SUCCESS
 import io.github.wulkanowy.ui.modules.conference.ConferenceFragment
 import io.github.wulkanowy.ui.modules.dashboard.adapters.DashboardAdapter
 import io.github.wulkanowy.ui.modules.exam.ExamFragment
@@ -36,6 +37,7 @@ import io.github.wulkanowy.utils.getErrorString
 import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.openInternetBrowser
 import io.github.wulkanowy.utils.toFormattedString
+import timber.log.Timber
 import java.time.LocalDate
 import javax.inject.Inject
 
@@ -62,6 +64,9 @@ class DashboardFragment : BaseFragment<FragmentDashboardBinding>(R.layout.fragme
             return ((recyclerWidth - margin) / resources.displayMetrics.density).toInt()
         }
 
+    override val isViewEmpty
+        get() = dashboardAdapter.itemCount == 0
+
     companion object {
 
         fun newInstance() = DashboardFragment()
@@ -77,6 +82,13 @@ class DashboardFragment : BaseFragment<FragmentDashboardBinding>(R.layout.fragme
         super.onViewCreated(view, savedInstanceState)
         binding = FragmentDashboardBinding.bind(view)
         presenter.onAttachView(this)
+        initializeCaptchaResultObserver()
+    }
+
+    private fun initializeCaptchaResultObserver() {
+        childFragmentManager.setFragmentResultListener(CAPTCHA_SUCCESS, this) { _, _ ->
+            presenter.onRetryAfterCaptcha()
+        }
     }
 
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardPresenter.kt
index c93dd9e7..74b427e7 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardPresenter.kt
@@ -239,6 +239,14 @@ class DashboardPresenter @Inject constructor(
         loadData(selectedDashboardTiles, forceRefresh = true)
     }
 
+    fun onRetryAfterCaptcha() {
+        view?.run {
+            showErrorView(false)
+            showProgress(true)
+        }
+        loadData(selectedDashboardTiles, forceRefresh = true)
+    }
+
     fun onViewReselected() {
         Timber.i("Dashboard view is reselected")
         view?.run {
@@ -316,7 +324,7 @@ class DashboardPresenter @Inject constructor(
                 ) { luckyNumberResource, messageResource, attendanceResource ->
                     val resList = listOf(luckyNumberResource, messageResource, attendanceResource)
 
-                    DashboardItem.HorizontalGroup(
+                    resList to DashboardItem.HorizontalGroup(
                         isLoading = resList.any { it is Resource.Loading },
                         error = resList.map { it.errorOrNull }.let { errors ->
                             if (errors.all { it != null }) {
@@ -341,9 +349,9 @@ class DashboardPresenter @Inject constructor(
                     )
                 })
         }
-            .filterNot { it.isLoading && forceRefresh }
+            .filterNot { (_, it) -> it.isLoading && forceRefresh }
             .distinctUntilChanged()
-            .onEach {
+            .onEach { (_, it) ->
                 updateData(it, forceRefresh)
 
                 if (it.isLoading) {
@@ -361,7 +369,7 @@ class DashboardPresenter @Inject constructor(
                 )
                 errorHandler.dispatch(it)
             }
-            .launch("horizontal_group ${if (forceRefresh) "-forceRefresh" else ""}")
+            .launchWithUniqueRefreshJob("horizontal_group", forceRefresh)
     }
 
     private fun loadGrades(student: Student, forceRefresh: Boolean) {
@@ -854,6 +862,28 @@ class DashboardPresenter @Inject constructor(
             onEach {
                 if (it is Resource.Success) {
                     cancelJobs(jobName)
+                } else if (it is Resource.Error) {
+                    cancelJobs(jobName)
+                }
+            }.launch(jobName)
+        } else {
+            launch(jobName)
+        }
+    }
+
+    @JvmName("launchWithUniqueRefreshJobHorizontalGroup")
+    private fun Flow<Pair<List<Resource<*>>, *>>.launchWithUniqueRefreshJob(
+        name: String,
+        forceRefresh: Boolean
+    ) {
+        val jobName = if (forceRefresh) "$name-forceRefresh" else name
+
+        if (forceRefresh) {
+            onEach { (resources, _) ->
+                if (resources.all { it is Resource.Success<*> }) {
+                    cancelJobs(jobName)
+                } else if (resources.any { it is Resource.Error<*> }) {
+                    cancelJobs(jobName)
                 }
             }.launch(jobName)
         } else {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardView.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardView.kt
index 76788543..fe011c92 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardView.kt
@@ -6,6 +6,8 @@ interface DashboardView : BaseView {
 
     val tileWidth: Int
 
+    val isViewEmpty: Boolean
+
     fun initView()
 
     fun updateData(data: List<DashboardItem>)
@@ -27,6 +29,5 @@ interface DashboardView : BaseView {
     fun popViewToRoot()
 
     fun openNotificationsCenterView()
-
     fun openInternetBrowser(url: String)
 }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugFragment.kt
index 000916b1..9db01a30 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugFragment.kt
@@ -2,6 +2,7 @@ package io.github.wulkanowy.ui.modules.debug
 
 import android.os.Bundle
 import android.view.View
+import android.webkit.CookieManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
@@ -58,6 +59,10 @@ class DebugFragment : BaseFragment<FragmentDebugBinding>(R.layout.fragment_debug
         (activity as? MainActivity)?.pushView(NotificationDebugFragment.newInstance())
     }
 
+    override fun clearWebkitCookies() {
+        CookieManager.getInstance().removeAllCookies(null)
+    }
+
     override fun onDestroyView() {
         presenter.onDetachView()
         super.onDestroyView()
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugPresenter.kt
index 67ac8886..816b5985 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugPresenter.kt
@@ -15,6 +15,7 @@ class DebugPresenter @Inject constructor(
     val items = listOf(
         DebugItem(R.string.logviewer_title),
         DebugItem(R.string.notification_debug_title),
+        DebugItem(R.string.debug_cookies_clear),
     )
 
     override fun onAttachView(view: DebugView) {
@@ -31,6 +32,7 @@ class DebugPresenter @Inject constructor(
         when (item.title) {
             R.string.logviewer_title -> view?.openLogViewer()
             R.string.notification_debug_title -> view?.openNotificationsDebug()
+            R.string.debug_cookies_clear -> view?.clearWebkitCookies()
             else -> Timber.d("Unknown debug item: $item")
         }
     }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugView.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugView.kt
index 9396ec6a..792d63d9 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/debug/DebugView.kt
@@ -11,4 +11,6 @@ interface DebugView : BaseView {
     fun openLogViewer()
 
     fun openNotificationsDebug()
+
+    fun clearWebkitCookies()
 }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormFragment.kt
index 8e9b86fa..975cad18 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormFragment.kt
@@ -7,6 +7,7 @@ import android.view.View.GONE
 import android.view.View.VISIBLE
 import androidx.core.view.isVisible
 import androidx.core.widget.doOnTextChanged
+import androidx.fragment.app.setFragmentResultListener
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.AdminMessage
@@ -14,6 +15,7 @@ import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.databinding.FragmentLoginFormBinding
 import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.captcha.CaptchaDialog
 import io.github.wulkanowy.ui.modules.dashboard.viewholders.AdminMessageViewHolder
 import io.github.wulkanowy.ui.modules.login.LoginActivity
 import io.github.wulkanowy.ui.modules.login.LoginData
@@ -72,6 +74,13 @@ class LoginFormFragment : BaseFragment<FragmentLoginFormBinding>(R.layout.fragme
         super.onViewCreated(view, savedInstanceState)
         binding = FragmentLoginFormBinding.bind(view)
         presenter.onAttachView(this)
+        initializeCaptchaResultObserver()
+    }
+
+    private fun initializeCaptchaResultObserver() {
+        setFragmentResultListener(CaptchaDialog.CAPTCHA_SUCCESS) { _, _ ->
+            presenter.onRetryAfterCaptcha()
+        }
     }
 
     override fun initView() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt
index ad535c38..c9ae4f27 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt
@@ -152,6 +152,10 @@ class LoginFormPresenter @Inject constructor(
         )
     }
 
+    fun onRetryAfterCaptcha() {
+        onSignInClick()
+    }
+
     fun onSignInClick() {
         val loginData = getLoginData()
 
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainActivity.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainActivity.kt
index ba0ef405..62c16257 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainActivity.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainActivity.kt
@@ -16,6 +16,7 @@ import androidx.core.view.isVisible
 import androidx.core.view.updateLayoutParams
 import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
@@ -30,6 +31,8 @@ import io.github.wulkanowy.databinding.ActivityMainBinding
 import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.modules.Destination
 import io.github.wulkanowy.ui.modules.account.accountquick.AccountQuickDialog
+import io.github.wulkanowy.ui.modules.auth.AuthDialog
+import io.github.wulkanowy.ui.modules.captcha.CaptchaDialog
 import io.github.wulkanowy.ui.modules.settings.appearance.menuorder.AppMenuItem
 import io.github.wulkanowy.utils.AnalyticsHelper
 import io.github.wulkanowy.utils.AppInfo
@@ -40,10 +43,17 @@ import io.github.wulkanowy.utils.dpToPx
 import io.github.wulkanowy.utils.nickOrName
 import io.github.wulkanowy.utils.safelyPopFragments
 import io.github.wulkanowy.utils.setOnViewChangeListener
+import kotlinx.coroutines.FlowPreview
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.debounce
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import timber.log.Timber
 import javax.inject.Inject
+import kotlin.time.Duration.Companion.seconds
 
 @AndroidEntryPoint
 class MainActivity : BaseActivity<MainPresenter, ActivityMainBinding>(), MainView,
@@ -73,6 +83,8 @@ class MainActivity : BaseActivity<MainPresenter, ActivityMainBinding>(), MainVie
     private val navController =
         FragNavController(supportFragmentManager, R.id.main_fragment_container)
 
+    private val captchaVerificationEvent = MutableSharedFlow<String?>()
+
     companion object {
 
         private const val EXTRA_START_DESTINATION = "start_destination_json"
@@ -144,6 +156,7 @@ class MainActivity : BaseActivity<MainPresenter, ActivityMainBinding>(), MainVie
         initializeToolbar()
         initializeBottomNavigation(startMenuIndex, rootAppMenuItems)
         initializeNavController(startMenuIndex, rootUpdatedDestinations)
+        initializeCaptchaVerificationEvent()
     }
 
     private fun initializeNavController(
@@ -323,6 +336,27 @@ class MainActivity : BaseActivity<MainPresenter, ActivityMainBinding>(), MainVie
             .show()
     }
 
+    @OptIn(FlowPreview::class)
+    private fun initializeCaptchaVerificationEvent() {
+        captchaVerificationEvent
+            .debounce(1.seconds)
+            .onEach { url ->
+                Timber.d("Showing captcha dialog for: $url")
+                showDialogFragment(CaptchaDialog.newInstance(url))
+            }
+            .launchIn(lifecycleScope)
+    }
+
+    override fun onCaptchaVerificationRequired(url: String?) {
+        lifecycleScope.launch {
+            captchaVerificationEvent.emit(url)
+        }
+    }
+
+    override fun showAuthDialog() {
+        showDialogFragment(AuthDialog.newInstance())
+    }
+
     override fun onSaveInstanceState(outState: Bundle) {
         super.onSaveInstanceState(outState)
         navController.onSaveInstanceState(outState)
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
index 19c4ef6b..f8d1323c 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
@@ -3,6 +3,7 @@ package io.github.wulkanowy.ui.modules.settings
 import android.os.Bundle
 import androidx.preference.PreferenceFragmentCompat
 import io.github.wulkanowy.R
+import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.modules.main.MainView
 import timber.log.Timber
 
@@ -26,6 +27,8 @@ class SettingsFragment : PreferenceFragmentCompat(), MainView.TitledView, Settin
 
     override fun showExpiredCredentialsDialog() {}
 
+    override fun onCaptchaVerificationRequired(url: String?) = Unit
+
     override fun showDecryptionFailedDialog() {}
 
     override fun openClearLoginView() {}
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/advanced/AdvancedFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/advanced/AdvancedFragment.kt
index 256b1337..3ef1a80a 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/advanced/AdvancedFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/advanced/AdvancedFragment.kt
@@ -8,7 +8,6 @@ import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.base.ErrorDialog
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.utils.AppInfo
 import javax.inject.Inject
@@ -51,6 +50,10 @@ class AdvancedFragment : PreferenceFragmentCompat(),
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
@@ -68,7 +71,7 @@ class AdvancedFragment : PreferenceFragmentCompat(),
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun onResume() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt
index 20423eb9..3d0c8052 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt
@@ -9,7 +9,6 @@ import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.base.ErrorDialog
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.utils.AppInfo
 import javax.inject.Inject
@@ -67,6 +66,10 @@ class AppearanceFragment : PreferenceFragmentCompat(),
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
@@ -84,7 +87,7 @@ class AppearanceFragment : PreferenceFragmentCompat(),
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun onResume() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/notifications/NotificationsFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/notifications/NotificationsFragment.kt
index 2ae983c2..0bf9ddad 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/notifications/NotificationsFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/notifications/NotificationsFragment.kt
@@ -21,7 +21,6 @@ import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.base.ErrorDialog
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.openInternetBrowser
@@ -137,6 +136,10 @@ class NotificationsFragment : PreferenceFragmentCompat(),
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
@@ -154,7 +157,7 @@ class NotificationsFragment : PreferenceFragmentCompat(),
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun showFixSyncDialog() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/sync/SyncFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/sync/SyncFragment.kt
index 133b1ff4..d5714483 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/sync/SyncFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/sync/SyncFragment.kt
@@ -10,7 +10,6 @@ import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.ui.base.BaseActivity
 import io.github.wulkanowy.ui.base.ErrorDialog
-import io.github.wulkanowy.ui.modules.auth.AuthDialog
 import io.github.wulkanowy.ui.modules.main.MainView
 import javax.inject.Inject
 
@@ -88,6 +87,10 @@ class SyncFragment : PreferenceFragmentCompat(),
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }
@@ -105,7 +108,7 @@ class SyncFragment : PreferenceFragmentCompat(),
     }
 
     override fun showAuthDialog() {
-        AuthDialog.newInstance().show(childFragmentManager, "auth_dialog")
+        (activity as? BaseActivity<*, *>)?.showAuthDialog()
     }
 
     override fun onResume() {
diff --git a/app/src/main/java/io/github/wulkanowy/utils/ExceptionExtension.kt b/app/src/main/java/io/github/wulkanowy/utils/ExceptionExtension.kt
index a4c2537a..18fc10bb 100644
--- a/app/src/main/java/io/github/wulkanowy/utils/ExceptionExtension.kt
+++ b/app/src/main/java/io/github/wulkanowy/utils/ExceptionExtension.kt
@@ -3,6 +3,7 @@ package io.github.wulkanowy.utils
 import android.content.res.Resources
 import io.github.wulkanowy.R
 import io.github.wulkanowy.sdk.exception.FeatureNotAvailableException
+import io.github.wulkanowy.sdk.scrapper.exception.CloudflareVerificationException
 import io.github.wulkanowy.sdk.scrapper.exception.FeatureDisabledException
 import io.github.wulkanowy.sdk.scrapper.exception.ScrapperException
 import io.github.wulkanowy.sdk.scrapper.exception.ServiceUnavailableException
@@ -34,6 +35,7 @@ fun Resources.getErrorString(error: Throwable): String = when (error) {
     is FeatureNotAvailableException -> R.string.error_feature_not_available
     is VulcanException -> R.string.error_unknown_uonet
     is ScrapperException -> R.string.error_unknown_app
+    is CloudflareVerificationException -> R.string.error_cloudflare_captcha
     is SSLHandshakeException -> when {
         error.isCausedByCertificateNotValidNow() -> R.string.error_invalid_device_datetime
         else -> R.string.error_timeout
diff --git a/app/src/main/java/io/github/wulkanowy/utils/WebkitCookieManagerProxy.kt b/app/src/main/java/io/github/wulkanowy/utils/WebkitCookieManagerProxy.kt
new file mode 100644
index 00000000..a5497871
--- /dev/null
+++ b/app/src/main/java/io/github/wulkanowy/utils/WebkitCookieManagerProxy.kt
@@ -0,0 +1,58 @@
+package io.github.wulkanowy.utils
+
+import java.net.CookiePolicy
+import java.net.CookieStore
+import java.net.HttpCookie
+import java.net.URI
+import android.webkit.CookieManager as WebkitCookieManager
+import java.net.CookieManager as JavaCookieManager
+
+class WebkitCookieManagerProxy : JavaCookieManager(null, CookiePolicy.ACCEPT_ALL) {
+
+    private val webkitCookieManager: WebkitCookieManager = WebkitCookieManager.getInstance()
+
+    override fun put(uri: URI?, responseHeaders: Map<String?, List<String?>>?) {
+        if (uri == null || responseHeaders == null) return
+        val url = uri.toString()
+        for (headerKey in responseHeaders.keys) {
+            if (headerKey == null || !(
+                    headerKey.equals("Set-Cookie2", ignoreCase = true) ||
+                        headerKey.equals("Set-Cookie", ignoreCase = true)
+                    )
+            ) continue
+
+            // process each of the headers
+            for (headerValue in responseHeaders[headerKey].orEmpty()) {
+                webkitCookieManager.setCookie(url, headerValue)
+            }
+        }
+    }
+
+    override operator fun get(
+        uri: URI?,
+        requestHeaders: Map<String?, List<String?>?>?
+    ): Map<String, List<String>> {
+        require(!(uri == null || requestHeaders == null)) { "Argument is null" }
+        val res = mutableMapOf<String, List<String>>()
+        val cookie = webkitCookieManager.getCookie(uri.toString())
+        if (cookie != null) res["Cookie"] = listOf(cookie)
+        return res
+    }
+
+    override fun getCookieStore(): CookieStore {
+        val cookies = super.getCookieStore()
+        return object : CookieStore {
+            override fun add(uri: URI?, cookie: HttpCookie?) = cookies.add(uri, cookie)
+            override fun get(uri: URI?): List<HttpCookie> = cookies.get(uri)
+            override fun getCookies(): List<HttpCookie> = cookies.cookies
+            override fun getURIs(): List<URI> = cookies.urIs
+            override fun remove(uri: URI?, cookie: HttpCookie?): Boolean =
+                cookies.remove(uri, cookie)
+
+            override fun removeAll(): Boolean {
+                webkitCookieManager.removeAllCookies(null)
+                return true
+            }
+        }
+    }
+}
diff --git a/app/src/main/play/release-notes/pl-PL/default.txt b/app/src/main/play/release-notes/pl-PL/default.txt
index 0a2eb68f..c2c30883 100644
--- a/app/src/main/play/release-notes/pl-PL/default.txt
+++ b/app/src/main/play/release-notes/pl-PL/default.txt
@@ -1,5 +1,6 @@
-Wersja 2.3.3
+Wersja 2.3.4
 
-— poprawiliśmy kolejne usterki przy odświeżaniu danych (teraz to powinno działać już dużo lepiej)
+— dodaliśmy obsługę captchy, co umożliwi używanie apki np. na odmianie ResMan Rzeszów
+— naprawiliśmy wyświetlanie frekwencji w szkołach używających eduOne (piszcie, jeśli nadal nie działa)
 
 Pełna lista zmian: https://github.com/wulkanowy/wulkanowy/releases
diff --git a/app/src/main/res/layout/dialog_captcha.xml b/app/src/main/res/layout/dialog_captcha.xml
new file mode 100644
index 00000000..539aa0cc
--- /dev/null
+++ b/app/src/main/res/layout/dialog_captcha.xml
@@ -0,0 +1,51 @@
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:minWidth="350dp"
+    tools:context=".ui.modules.captcha.CaptchaDialog">
+
+    <TextView
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="20dp"
+        android:gravity="center_vertical"
+        android:text="@string/captcha_dialog_title"
+        app:layout_constraintBottom_toBottomOf="@id/captcha_close"
+        app:layout_constraintEnd_toStartOf="@id/captcha_refresh"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/captcha_refresh"
+        style="@style/Widget.Material3.Button.IconButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end"
+        android:contentDescription="@string/logviewer_refresh"
+        app:icon="@drawable/ic_refresh"
+        app:iconTint="?colorOnSurface"
+        app:layout_constraintEnd_toStartOf="@id/captcha_close"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/captcha_close"
+        style="@style/Widget.Material3.Button.IconButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end"
+        android:contentDescription="@string/all_close"
+        app:icon="@drawable/ic_all_close_circle"
+        app:iconTint="?colorOnSurface"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <WebView
+        android:id="@+id/captcha_webview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/captcha_close" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 8e60b7a6..b4f1f878 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Prohlížeč protokolů</string>
     <string name="debug_title">Ladění</string>
     <string name="notification_debug_title">Ladění oznámení</string>
+    <string name="debug_cookies_clear">Vymazat soubory cookie webview</string>
     <string name="contributors_title">Tvůrci</string>
     <string name="license_title">Licence</string>
     <string name="message_title">Zprávy</string>
@@ -833,6 +834,9 @@
     <string name="auth_title">Autorizace</string>
     <string name="auth_description">Pro provoz aplikace potřebujeme potvrdit vaši identitu. Zadejte PESEL žáka &lt;b&gt;%1$s&lt;/b&gt; v níže uvedeném poli</string>
     <string name="auth_button_skip">Zatím přeskočit</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Probíhá ověřování. Počkejte…</string>
+    <string name="captcha_verified_message">Úspěšně ověřeno</string>
     <!--Errors-->
     <string name="error_no_internet">Žádné internetové připojení</string>
     <string name="error_invalid_device_datetime">Vyskytla se chyba. Zkontrolujte hodiny svého zařízení</string>
@@ -842,6 +846,7 @@
     <string name="error_service_unavailable">Probíhá údržba deníku UONET+. Zkuste to později znovu</string>
     <string name="error_unknown_uonet">Neznámá chyba deniku UONET+. Prosím zkuste to znovu později</string>
     <string name="error_unknown_app">Neznámá chyba aplikace. Prosím zkuste to znovu později</string>
+    <string name="error_cloudflare_captcha">Vyžadováno ověření Captcha</string>
     <string name="error_unknown">Vyskytla se neočekávaná chyba</string>
     <string name="error_feature_disabled">Funkce je deaktivována přes vaší školou</string>
     <string name="error_feature_not_available">Funkce není k dispozici. Přihlaste se v jiném režimu než Mobile API</string>
diff --git a/app/src/main/res/values-da-rDK/strings.xml b/app/src/main/res/values-da-rDK/strings.xml
index 01306662..ac616418 100644
--- a/app/src/main/res/values-da-rDK/strings.xml
+++ b/app/src/main/res/values-da-rDK/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Log viewer</string>
     <string name="debug_title">Debug</string>
     <string name="notification_debug_title">Notification debug</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Contributors</string>
     <string name="license_title">Licenses</string>
     <string name="message_title">Messages</string>
@@ -743,6 +744,9 @@
     <string name="auth_title">Authorization</string>
     <string name="auth_description">To operate the application, we need to confirm your identity. Please enter the student\'s PESEL &lt;b&gt;%1$s&lt;/b&gt; in the field below</string>
     <string name="auth_button_skip">Skip for now</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
     <!--Errors-->
     <string name="error_no_internet">No internet connection</string>
     <string name="error_invalid_device_datetime">An error occurred. Check your device clock</string>
@@ -752,6 +756,7 @@
     <string name="error_service_unavailable">Maintenance underway UONET + register. Try again later</string>
     <string name="error_unknown_uonet">Unknown UONET + register error. Try again later</string>
     <string name="error_unknown_app">Unknown application error. Please try again later</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">An unexpected error occurred</string>
     <string name="error_feature_disabled">Feature disabled by your school</string>
     <string name="error_feature_not_available">Feature not available. Login in a mode other than Mobile API</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 09173d38..ec6aa655 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Log Viewer</string>
     <string name="debug_title">Debuggen</string>
     <string name="notification_debug_title">Benachrichtigungen debuggen</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Mitarbeiter</string>
     <string name="license_title">Lizenzen</string>
     <string name="message_title">Nachrichten</string>
@@ -743,6 +744,9 @@
     <string name="auth_title">Authorization</string>
     <string name="auth_description">To operate the application, we need to confirm your identity. Please enter the student\'s PESEL &lt;b&gt;%1$s&lt;/b&gt; in the field below</string>
     <string name="auth_button_skip">Skip for now</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
     <!--Errors-->
     <string name="error_no_internet">Keine Internetverbindung</string>
     <string name="error_invalid_device_datetime">Es ist ein Fehler aufgetreten. Überprüfen Sie Ihre Geräteuhr</string>
@@ -752,6 +756,7 @@
     <string name="error_service_unavailable">Wartung im Gange UONET + Klassenbuch. Versuchen Sie es später noch einmal</string>
     <string name="error_unknown_uonet">Unbekannter UONET + Registerfehler. Versuchen Sie es später erneut</string>
     <string name="error_unknown_app">Unbekannter Anwendungsfehler. Bitte versuchen Sie es später noch einmal</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">Ein unerwarteter Fehler ist aufgetreten</string>
     <string name="error_feature_disabled">Funktion, die von Ihrer Schule deaktiviert wurde</string>
     <string name="error_feature_not_available">Feature in diesem Modus nicht verfügbar</string>
diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index 01306662..ac616418 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Log viewer</string>
     <string name="debug_title">Debug</string>
     <string name="notification_debug_title">Notification debug</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Contributors</string>
     <string name="license_title">Licenses</string>
     <string name="message_title">Messages</string>
@@ -743,6 +744,9 @@
     <string name="auth_title">Authorization</string>
     <string name="auth_description">To operate the application, we need to confirm your identity. Please enter the student\'s PESEL &lt;b&gt;%1$s&lt;/b&gt; in the field below</string>
     <string name="auth_button_skip">Skip for now</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
     <!--Errors-->
     <string name="error_no_internet">No internet connection</string>
     <string name="error_invalid_device_datetime">An error occurred. Check your device clock</string>
@@ -752,6 +756,7 @@
     <string name="error_service_unavailable">Maintenance underway UONET + register. Try again later</string>
     <string name="error_unknown_uonet">Unknown UONET + register error. Try again later</string>
     <string name="error_unknown_app">Unknown application error. Please try again later</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">An unexpected error occurred</string>
     <string name="error_feature_disabled">Feature disabled by your school</string>
     <string name="error_feature_not_available">Feature not available. Login in a mode other than Mobile API</string>
diff --git a/app/src/main/res/values-it-rIT/strings.xml b/app/src/main/res/values-it-rIT/strings.xml
index 01306662..ac616418 100644
--- a/app/src/main/res/values-it-rIT/strings.xml
+++ b/app/src/main/res/values-it-rIT/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Log viewer</string>
     <string name="debug_title">Debug</string>
     <string name="notification_debug_title">Notification debug</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Contributors</string>
     <string name="license_title">Licenses</string>
     <string name="message_title">Messages</string>
@@ -743,6 +744,9 @@
     <string name="auth_title">Authorization</string>
     <string name="auth_description">To operate the application, we need to confirm your identity. Please enter the student\'s PESEL &lt;b&gt;%1$s&lt;/b&gt; in the field below</string>
     <string name="auth_button_skip">Skip for now</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
     <!--Errors-->
     <string name="error_no_internet">No internet connection</string>
     <string name="error_invalid_device_datetime">An error occurred. Check your device clock</string>
@@ -752,6 +756,7 @@
     <string name="error_service_unavailable">Maintenance underway UONET + register. Try again later</string>
     <string name="error_unknown_uonet">Unknown UONET + register error. Try again later</string>
     <string name="error_unknown_app">Unknown application error. Please try again later</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">An unexpected error occurred</string>
     <string name="error_feature_disabled">Feature disabled by your school</string>
     <string name="error_feature_not_available">Feature not available. Login in a mode other than Mobile API</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index fb9d170a..1b4fbe66 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Przeglądarka logów</string>
     <string name="debug_title">Debugowanie</string>
     <string name="notification_debug_title">Debugowanie powiadomień</string>
+    <string name="debug_cookies_clear">Wyczyść ciasteczka webview</string>
     <string name="contributors_title">Twórcy</string>
     <string name="license_title">Licencje</string>
     <string name="message_title">Wiadomości</string>
@@ -833,6 +834,9 @@
     <string name="auth_title">Autoryzacja</string>
     <string name="auth_description">Rodzicu, musimy mieć pewność, że Twój adres e-mail został powiązany z prawidłowym kontem ucznia. W celu autoryzacji konta podaj numer PESEL ucznia &lt;b&gt;%1$s&lt;/b&gt; w polu poniżej</string>
     <string name="auth_button_skip">Na razie pomiń</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Trwa weryfikacja. Czekaj…</string>
+    <string name="captcha_verified_message">Pomyślnie zweryfikowano</string>
     <!--Errors-->
     <string name="error_no_internet">Brak połączenia z internetem</string>
     <string name="error_invalid_device_datetime">Wystąpił błąd. Sprawdź poprawność daty w urządzeniu</string>
@@ -842,6 +846,7 @@
     <string name="error_service_unavailable">Trwa przerwa techniczna dziennika UONET+. Spróbuj ponownie później</string>
     <string name="error_unknown_uonet">Nieznany błąd dziennika UONET+. Spróbuj ponownie później</string>
     <string name="error_unknown_app">Nieznany błąd aplikacji. Spróbuj ponownie później</string>
+    <string name="error_cloudflare_captcha">Wymagana weryfikacja captcha</string>
     <string name="error_unknown">Wystąpił nieoczekiwany błąd</string>
     <string name="error_feature_disabled">Funkcja wyłączona przez szkołę</string>
     <string name="error_feature_not_available">Funkcja niedostępna. Zaloguj się w trybie innym niż Mobilne API</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index c604cd8b..feb08a03 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Просмотр журнала</string>
     <string name="debug_title">Отладка</string>
     <string name="notification_debug_title">Отладка уведомлений</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Разработчики</string>
     <string name="license_title">Лицензии</string>
     <string name="message_title">Сообщения</string>
@@ -833,6 +834,9 @@
     <string name="auth_title">Авторизация</string>
     <string name="auth_description">Для работы приложения нам необходимо подтвердить вашу личность. Введите PESEL учащегося &lt;b&gt;%1$s&lt;/b&gt; в поле ниже</string>
     <string name="auth_button_skip">Пропустить сейчас</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
     <!--Errors-->
     <string name="error_no_internet">Интернет-соединение отсутствует</string>
     <string name="error_invalid_device_datetime">Произошла ошибка. Проверьте время на вашем устройстве</string>
@@ -842,6 +846,7 @@
     <string name="error_service_unavailable">UONET+ проводит техническое обслуживание, повторите попытку позже</string>
     <string name="error_unknown_uonet">Неизвестная ошибка дневника UONET+, повторите попытку позже</string>
     <string name="error_unknown_app">Неизвестная ошибка приложения, повторите попытку позже</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">Произошла непредвиденная ошибка</string>
     <string name="error_feature_disabled">Функция отключена вашей школой</string>
     <string name="error_feature_not_available">Функция недоступна в режиме Mobile API. Воспользуйтесь другим режимом</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index e02b1542..aaf04bc8 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Prehliadač protokolov</string>
     <string name="debug_title">Ladenie</string>
     <string name="notification_debug_title">Ladenie oznámení</string>
+    <string name="debug_cookies_clear">Vymazať súbory cookie webview</string>
     <string name="contributors_title">Tvorcovia</string>
     <string name="license_title">Licencie</string>
     <string name="message_title">Správy</string>
@@ -833,6 +834,9 @@
     <string name="auth_title">Autorizácia</string>
     <string name="auth_description">Na prevádzku aplikácie potrebujeme potvrdiť vašu identitu. Zadajte PESEL žiaka &lt;b&gt;%1$s&lt;/b&gt; v nižšie uvedenom poli</string>
     <string name="auth_button_skip">Zatiaľ preskočiť</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Overovanie prebieha. Počkajte…</string>
+    <string name="captcha_verified_message">Úspešne overené</string>
     <!--Errors-->
     <string name="error_no_internet">Žiadne internetové pripojenie</string>
     <string name="error_invalid_device_datetime">Vyskytla sa chyba. Skontrolujte hodiny svojho zariadenia</string>
@@ -842,6 +846,7 @@
     <string name="error_service_unavailable">Prebieha údržba denníka UONET+. Skúste to neskôr znova</string>
     <string name="error_unknown_uonet">Neznáma chyba dennika UONET+. Prosím skúste to znova neskôr</string>
     <string name="error_unknown_app">Neznáma chyba aplikácie. Prosím skúste to znova neskôr</string>
+    <string name="error_cloudflare_captcha">Vyžaduje sa overenie Captcha</string>
     <string name="error_unknown">Vyskytla sa neočakávaná chyba</string>
     <string name="error_feature_disabled">Funkcia je deaktivovaná cez vašou školou</string>
     <string name="error_feature_not_available">Funkcia nie je k dispozícii. Prihláste sa v inom režime než Mobile API</string>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
index 32617f42..fffae003 100644
--- a/app/src/main/res/values-uk/strings.xml
+++ b/app/src/main/res/values-uk/strings.xml
@@ -13,6 +13,7 @@
     <string name="logviewer_title">Переглядач логів</string>
     <string name="debug_title">Відладка</string>
     <string name="notification_debug_title">Відладка сповіщень</string>
+    <string name="debug_cookies_clear">Очистити кукі веб - перегляду</string>
     <string name="contributors_title">Розробники</string>
     <string name="license_title">Ліцензії</string>
     <string name="message_title">Листи</string>
@@ -833,6 +834,9 @@
     <string name="auth_title">Авторизувати</string>
     <string name="auth_description">Для роботи програми нам потрібно підтвердити вашу особу. Будь ласка, введіть число PESEL &lt;b&gt;%1$s&lt;/b&gt; студента в поле нижче</string>
     <string name="auth_button_skip">Поки що пропустити</string>
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Верифікація в процесі. Чекайте…</string>
+    <string name="captcha_verified_message">Верифікація завершена</string>
     <!--Errors-->
     <string name="error_no_internet">Немає з\'єднання з інтернетом</string>
     <string name="error_invalid_device_datetime">Сталася помилка. Перевірте годинник пристрою</string>
@@ -842,6 +846,7 @@
     <string name="error_service_unavailable">UONET+ проводить технічне осблуговування, спробуйте пізніше</string>
     <string name="error_unknown_uonet">Невідома помилка щоденника UONET+, спробуйте пізніше</string>
     <string name="error_unknown_app">Невідома помилка програми, спробуйте пізніше</string>
+    <string name="error_cloudflare_captcha">Необхідна перевірка Captcha</string>
     <string name="error_unknown">Відбулася несподівана помилка</string>
     <string name="error_feature_disabled">Функція вимкнена вашою школою</string>
     <string name="error_feature_not_available">Функція недоступна в режимі Mobile API. Увійдіть в інший режим</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 72910b85..60d85606 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -14,6 +14,7 @@
     <string name="logviewer_title">Log viewer</string>
     <string name="debug_title">Debug</string>
     <string name="notification_debug_title">Notification debug</string>
+    <string name="debug_cookies_clear">Clear webview cookies</string>
     <string name="contributors_title">Contributors</string>
     <string name="license_title">Licenses</string>
     <string name="message_title">Messages</string>
@@ -833,6 +834,11 @@
     <string name="auth_button_skip">Skip for now</string>
 
 
+    <!--Captcha-->
+    <string name="captcha_dialog_title">Verification is in progress. Wait…</string>
+    <string name="captcha_verified_message">Verified successfully</string>
+
+
     <!--Errors-->
     <string name="error_no_internet">No internet connection</string>
     <string name="error_invalid_device_datetime">An error occurred. Check your device clock</string>
@@ -842,6 +848,7 @@
     <string name="error_service_unavailable">Maintenance underway UONET + register. Try again later</string>
     <string name="error_unknown_uonet">Unknown UONET + register error. Try again later</string>
     <string name="error_unknown_app">Unknown application error. Please try again later</string>
+    <string name="error_cloudflare_captcha">Captcha verification required</string>
     <string name="error_unknown">An unexpected error occurred</string>
     <string name="error_feature_disabled">Feature disabled by your school</string>
     <string name="error_feature_not_available">Feature not available. Login in a mode other than Mobile API</string>
diff --git a/app/src/play/java/io/github/wulkanowy/ui/modules/settings/ads/AdsFragment.kt b/app/src/play/java/io/github/wulkanowy/ui/modules/settings/ads/AdsFragment.kt
index d7d83e6c..30b9e6b7 100644
--- a/app/src/play/java/io/github/wulkanowy/ui/modules/settings/ads/AdsFragment.kt
+++ b/app/src/play/java/io/github/wulkanowy/ui/modules/settings/ads/AdsFragment.kt
@@ -105,6 +105,10 @@ class AdsFragment : PreferenceFragmentCompat(), MainView.TitledView, AdsView {
         (activity as? BaseActivity<*, *>)?.showExpiredCredentialsDialog()
     }
 
+    override fun onCaptchaVerificationRequired(url: String?) {
+        (activity as? BaseActivity<*, *>)?.onCaptchaVerificationRequired(url)
+    }
+
     override fun showDecryptionFailedDialog() {
         (activity as? BaseActivity<*, *>)?.showDecryptionFailedDialog()
     }