diff --git a/app/src/main/assets/pl-changelog.html b/app/src/main/assets/pl-changelog.html
index 5104732c..e49ccaa1 100644
--- a/app/src/main/assets/pl-changelog.html
+++ b/app/src/main/assets/pl-changelog.html
@@ -1,14 +1,7 @@
-<h3>Wersja 4.13, 2022-10-26</h3>
+<h3>Wersja 4.13.2, 2022-11-28</h3>
 <ul>
-    <li>Poprawione powiadomienia na Androidzie 13. @santoni0</li>
-    <li>Opcja kolorowania bloków w planie lekcji.</li>
-    <li><b>USOS</b> - pierwsza wersja obsługi systemu. Osobne rodzaje wydarzeń (oraz wygląd niektórych części aplikacji) lepiej dostosowany do nauki na studiach.</li>
-    <li>Możliwość dostosowania wyświetlania planu lekcji.</li>
-    <li>Opcja ustawienia nowych wydarzeń domyślnie jako udostępnione.</li>
-    <li>Poprawione udostępnianie notatek dotyczących danej lekcji</li>
-    <li>Bardziej czytelna legenda rodzaju udostępnionego wydarzenia.</li>
-    <li>Poprawione opcje filtrowania powiadomień i wyboru przycisków menu bocznego.</li>
-    <li>Ulepszony system pobierania aktualizacji aplikacji.</li>
+    <li>Poprawiono synchronizację w Mobidzienniku bez ustawionego adresu e-mail.</li>
+    <li>Poprawiono błąd synchronizacji w Vulcanie.</li>
 </ul>
 <br>
 <br>
diff --git a/app/src/main/cpp/szkolny-signing.cpp b/app/src/main/cpp/szkolny-signing.cpp
index 40fa2337..582bc8b3 100644
--- a/app/src/main/cpp/szkolny-signing.cpp
+++ b/app/src/main/cpp/szkolny-signing.cpp
@@ -9,7 +9,7 @@
 
 /*secret password - removed for source code publication*/
 static toys AES_IV[16] = {
-	0xce, 0x63, 0xdd, 0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
+	0x8c, 0xad, 0x9c, 0x3e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
 
 unsigned char *agony(unsigned int laugh, unsigned char *box, unsigned char *heat);
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/config/Config.kt b/app/src/main/java/pl/szczodrzynski/edziennik/config/Config.kt
index 54530a4e..2042e8b2 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/config/Config.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/config/Config.kt
@@ -33,7 +33,7 @@ class Config(db: AppDb) : BaseConfig(db) {
     var update by config<Update?>(null)
     var updatesChannel by config<String>("release")
 
-    var devMode by config<Boolean?>(null)
+    var devMode by config<Boolean?>("debugMode", null)
     var devModePassword by config<String?>(null)
     var enableChucker by config<Boolean?>(null)
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/config/DelegateConfig.kt b/app/src/main/java/pl/szczodrzynski/edziennik/config/DelegateConfig.kt
index 00ede071..91dac668 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/config/DelegateConfig.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/config/DelegateConfig.kt
@@ -115,9 +115,9 @@ class ConfigDelegate<T>(
             is Boolean -> value
             // enums, maps & collections
             is Enum<*> -> value.toInt()
-            is Collection<*> -> JsonArray(value.map {
+            is Collection<*> -> value.map {
                 if (it is Number || it is Boolean) it else serialize(it, serializeObjects = false)
-            })
+            }.toJsonElement()
             is Map<*, *> -> gson.toJson(value.mapValues { (_, it) ->
                 if (it is Number || it is Boolean) it else serialize(it, serializeObjects = false)
             })
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiNotices.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiNotices.kt
index 754bbc03..83536977 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiNotices.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiNotices.kt
@@ -36,7 +36,7 @@ class LibrusApiNotices(override val data: DataLibrus,
                 val id = note.getLong("Id") ?: return@forEach
                 val text = note.getString("Text") ?: ""
                 val categoryId = note.getJsonObject("Category")?.getLong("Id") ?: -1
-                val teacherId = note.getJsonObject("AddedBy")?.getLong("Id") ?: -1
+                val teacherId = note.getJsonObject("Teacher")?.getLong("Id") ?: -1
                 val addedDate = note.getString("Date")?.let { Date.fromY_m_d(it) } ?: return@forEach
 
                 val type = when (note.getInt("Positive")) {
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusMessagesGetMessage.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusMessagesGetMessage.kt
index 0e50467c..e8a1e1a6 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusMessagesGetMessage.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusMessagesGetMessage.kt
@@ -125,7 +125,7 @@ class LibrusMessagesGetMessage(override val data: DataLibrus,
                         val receiverId = teacher?.id ?: -1
                         teacher?.loginId = receiverLoginId
 
-                        val readDateText = message.select("readed").text()
+                        val readDateText = receiver.select("readed").text()
                         val readDate = when (readDateText.isNotNullNorEmpty()) {
                             true -> Date.fromIso(readDateText)
                             else -> 0
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebAccountEmail.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebAccountEmail.kt
index 9dc3878c..6c252678 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebAccountEmail.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/web/MobidziennikWebAccountEmail.kt
@@ -10,6 +10,7 @@ import pl.szczodrzynski.edziennik.data.api.edziennik.mobidziennik.ENDPOINT_MOBID
 import pl.szczodrzynski.edziennik.data.api.edziennik.mobidziennik.data.MobidziennikWeb
 import pl.szczodrzynski.edziennik.ext.DAY
 import pl.szczodrzynski.edziennik.ext.get
+import pl.szczodrzynski.edziennik.ext.isNotNullNorBlank
 
 class MobidziennikWebAccountEmail(override val data: DataMobidziennik,
                                   override val lastSync: Long?,
@@ -24,7 +25,8 @@ class MobidziennikWebAccountEmail(override val data: DataMobidziennik,
             MobidziennikLuckyNumberExtractor(data, text)
 
             val email = Regexes.MOBIDZIENNIK_ACCOUNT_EMAIL.find(text)?.let { it[1] }
-            data.loginEmail = email
+            if (email.isNotNullNorBlank())
+                data.loginEmail = email
 
             data.setSyncNext(ENDPOINT_MOBIDZIENNIK_WEB_ACCOUNT_EMAIL, if (email == null) 3* DAY else 7* DAY)
             onSuccess(ENDPOINT_MOBIDZIENNIK_WEB_ACCOUNT_EMAIL)
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/login/MobidziennikLoginApi2.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/login/MobidziennikLoginApi2.kt
index 9258886b..01d7b9b7 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/login/MobidziennikLoginApi2.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/login/MobidziennikLoginApi2.kt
@@ -16,6 +16,7 @@ import pl.szczodrzynski.edziennik.data.api.models.ApiError
 import pl.szczodrzynski.edziennik.ext.JsonObject
 import pl.szczodrzynski.edziennik.ext.getJsonObject
 import pl.szczodrzynski.edziennik.ext.getString
+import pl.szczodrzynski.edziennik.ext.isNotNullNorBlank
 import pl.szczodrzynski.edziennik.ext.isNotNullNorEmpty
 import pl.szczodrzynski.edziennik.utils.Utils
 
@@ -77,7 +78,9 @@ class MobidziennikLoginApi2(val data: DataMobidziennik, val onSuccess: () -> Uni
                     }
                 }
 
-                data.loginEmail = json.getString("email")
+                val email = json.getString("email")
+                if (email.isNotNullNorBlank())
+                    data.loginEmail = email
                 data.globalId = json.getString("id_global")
                 data.loginId = json.getString("login")
                 onSuccess()
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/VulcanHebe.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/VulcanHebe.kt
index a99ac7a4..83963340 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/VulcanHebe.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/VulcanHebe.kt
@@ -26,6 +26,7 @@ import pl.szczodrzynski.edziennik.utils.Utils.d
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Time
 import java.net.HttpURLConnection
+import java.net.HttpURLConnection.HTTP_NOT_FOUND
 import java.net.URLEncoder
 import java.time.Instant
 import java.time.LocalDateTime
@@ -183,6 +184,7 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
         payload: JsonElement? = null,
         baseUrl: Boolean = false,
         firebaseToken: String? = null,
+        allow404: Boolean = false,
         crossinline onSuccess: (json: T, response: Response?) -> Unit
     ) {
         val url = "${if (baseUrl) data.apiUrl else data.fullApiUrl}$endpoint"
@@ -295,6 +297,19 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
             }
 
             override fun onFailure(response: Response?, throwable: Throwable?) {
+                if (allow404 && response?.code() == HTTP_NOT_FOUND) {
+                    try {
+                        onSuccess(null as T, response)
+                    } catch (e: Exception) {
+                        data.error(
+                            ApiError(tag, EXCEPTION_VULCAN_HEBE_REQUEST)
+                                .withResponse(response)
+                                .withThrowable(e)
+                        )
+                    }
+                    return
+                }
+
                 data.error(
                     ApiError(tag, ERROR_REQUEST_FAILURE)
                         .withResponse(response)
@@ -338,6 +353,7 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
         query: Map<String, String> = mapOf(),
         baseUrl: Boolean = false,
         firebaseToken: String? = null,
+        allow404: Boolean = false,
         crossinline onSuccess: (json: T, response: Response?) -> Unit
     ) {
         val queryPath = query.map {
@@ -348,6 +364,7 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
             if (query.isNotEmpty()) "$endpoint?$queryPath" else endpoint,
             baseUrl = baseUrl,
             firebaseToken = firebaseToken,
+            allow404 = allow404,
             onSuccess = onSuccess
         )
     }
@@ -382,6 +399,7 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
         messageBox: String? = null,
         params: Map<String, String> = mapOf(),
         includeFilterType: Boolean = true,
+        allow404: Boolean = false,
         onSuccess: (data: List<JsonObject>, response: Response?) -> Unit
     ) {
         val url = if (includeFilterType && filterType != null)
@@ -427,8 +445,8 @@ open class VulcanHebe(open val data: DataVulcan, open val lastSync: Long?) {
             )
             .format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
 
-        apiGet(tag, url, query) { json: JsonArray, response ->
-            onSuccess(json.map { it.asJsonObject }, response)
+        apiGet(tag, url, query, allow404 = allow404) { json: JsonArray?, response ->
+            onSuccess(json?.map { it.asJsonObject } ?: listOf(), response)
         }
     }
 }
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeAddressbook.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeAddressbook.kt
index d7bec22b..5893486b 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeAddressbook.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeAddressbook.kt
@@ -19,6 +19,7 @@ import pl.szczodrzynski.edziennik.data.db.entity.Teacher.Companion.TYPE_PARENTS_
 import pl.szczodrzynski.edziennik.data.db.entity.Teacher.Companion.TYPE_STUDENT
 import pl.szczodrzynski.edziennik.data.db.entity.Teacher.Companion.TYPE_TEACHER
 import pl.szczodrzynski.edziennik.ext.*
+import java.net.HttpURLConnection.HTTP_NOT_FOUND
 
 class VulcanHebeAddressbook(
     override val data: DataVulcan,
@@ -41,8 +42,15 @@ class VulcanHebeAddressbook(
             VULCAN_HEBE_ENDPOINT_ADDRESSBOOK,
             HebeFilterType.BY_PERSON,
             lastSync = lastSync,
-            includeFilterType = false
-        ) { list, _ ->
+            includeFilterType = false,
+            allow404 = true,
+        ) { list, response ->
+            if (response?.code() == HTTP_NOT_FOUND) {
+                data.setSyncNext(ENDPOINT_VULCAN_HEBE_ADDRESSBOOK, 2 * DAY)
+                onSuccess(ENDPOINT_VULCAN_HEBE_ADDRESSBOOK)
+                return@apiGetList
+            }
+
             list.forEach { person ->
                 val id = person.getString("Id") ?: return@forEach
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
index 7ea5b661..cea7a064 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
@@ -46,6 +46,6 @@ object Signing {
 
     /*fun provideKey(param1: String, param2: Long): ByteArray {*/
     fun pleaseStopRightNow(param1: String, param2: Long): ByteArray {
-        return "$param1.MTIzNDU2Nzg5MDHSZrnOj0===.$param2".sha256()
+        return "$param1.MTIzNDU2Nzg5MDLUEjNGMN===.$param2".sha256()
     }
 }
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/db/enums/LoginMethod.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/db/enums/LoginMethod.kt
index be298b9a..64b0b7ca 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/db/enums/LoginMethod.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/db/enums/LoginMethod.kt
@@ -6,6 +6,8 @@ package pl.szczodrzynski.edziennik.data.db.enums
 
 import pl.szczodrzynski.edziennik.data.db.entity.LoginStore
 import pl.szczodrzynski.edziennik.data.db.entity.Profile
+import pl.szczodrzynski.edziennik.ext.getString
+import pl.szczodrzynski.edziennik.ext.isNotNullNorBlank
 
 enum class LoginMethod(
     val loginType: LoginType,
@@ -26,7 +28,7 @@ enum class LoginMethod(
     MOBIDZIENNIK_API2(
         loginType = LoginType.MOBIDZIENNIK,
         id = 1300,
-        isPossible = { profile, _ -> profile?.studentData?.has("email") ?: false },
+        isPossible = { profile, _ -> profile?.studentData?.getString("email").isNotNullNorBlank() },
     ),
     LIBRUS_PORTAL(
         loginType = LoginType.LIBRUS,
@@ -57,7 +59,7 @@ enum class LoginMethod(
     VULCAN_WEB_MAIN(
         loginType = LoginType.VULCAN,
         id = 4100,
-        isPossible = { _, loginStore -> loginStore.hasLoginData("webHost") },
+        isPossible = { _, loginStore -> loginStore.getLoginData("webHost", null).isNotNullNorBlank() },
     ),
     VULCAN_HEBE(
         loginType = LoginType.VULCAN,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ext/JsonExtensions.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ext/JsonExtensions.kt
index 5342b330..b91399a6 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ext/JsonExtensions.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ext/JsonExtensions.kt
@@ -5,6 +5,7 @@
 package pl.szczodrzynski.edziennik.ext
 
 import android.os.Bundle
+import com.google.gson.Gson
 import com.google.gson.JsonArray
 import com.google.gson.JsonElement
 import com.google.gson.JsonObject
@@ -48,6 +49,11 @@ fun JsonObject.putEnum(key: String, value: Enum<*>) = addProperty(key, value.toI
 fun String.toJsonObject(): JsonObject? = try { JsonParser.parseString(this).asJsonObject } catch (ignore: Exception) { null }
 fun String.toJsonArray(): JsonArray? = try { JsonParser.parseString(this).asJsonArray } catch (ignore: Exception) { null }
 
+fun Any?.toJsonElement(): JsonElement = when (this) {
+    is Collection<*> -> JsonArray(this)
+    else -> Gson().toJsonTree(this)
+}
+
 operator fun JsonObject.set(key: String, value: JsonElement) = this.add(key, value)
 operator fun JsonObject.set(key: String, value: Boolean) = this.addProperty(key, value)
 operator fun JsonObject.set(key: String, value: String?) = this.addProperty(key, value)
@@ -67,6 +73,7 @@ fun JsonObject(vararg properties: Pair<String, Any?>): JsonObject {
                 is Number -> addProperty(key, value)
                 is Boolean -> addProperty(key, value)
                 is Enum<*> -> addProperty(key, value.toInt())
+                else -> add(key, property.toJsonElement())
             }
         }
     }
@@ -98,6 +105,8 @@ fun JsonArray(properties: Collection<Any?>): JsonArray {
                 is Char -> add(property as Char?)
                 is Number -> add(property as Number?)
                 is Boolean -> add(property as Boolean?)
+                is Enum<*> -> add(property.toInt())
+                else -> add(property.toJsonElement())
             }
         }
     }
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index c1197150..50043dac 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -1433,4 +1433,5 @@
     <string name="dialog_lesson_attendance_details">Details</string>
     <string name="menu_agenda_config">Agenda settings</string>
     <string name="registration_config_note_sharing_title">Share notes</string>
+    <string name="home_timetable_all_lessons">All lessons:</string>
 </resources>
diff --git a/build.gradle b/build.gradle
index b8eec4e3..d51f1fec 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
         kotlin_version = '1.6.10'
 
         release = [
-                versionName: "4.13",
-                versionCode: 4130099
+                versionName: "4.13.2",
+                versionCode: 4130299
         ]
 
         setup = [