diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/LibrusApi.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/LibrusApi.kt
index 317a79aa..aa3db971 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/LibrusApi.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/LibrusApi.kt
@@ -26,7 +26,7 @@ open class LibrusApi(open val data: DataLibrus) {
     val profile
         get() = data.profile
 
-    fun apiGet(tag: String, endpoint: String, method: Int = GET, payload: JsonObject? = null, onSuccess: (json: JsonObject) -> Unit) {
+    fun apiGet(tag: String, endpoint: String, method: Int = GET, payload: JsonObject? = null, ignoreErrors: List<Int> = emptyList(), onSuccess: (json: JsonObject) -> Unit) {
 
         d(tag, "Request: Librus/Api - ${if (data.fakeLogin) FAKE_LIBRUS_API else LIBRUS_API_URL}/$endpoint")
 
@@ -65,10 +65,12 @@ open class LibrusApi(open val data: DataLibrus) {
                         "Nieprawidłowy węzeł." -> ERROR_LIBRUS_API_INCORRECT_ENDPOINT
                         else -> ERROR_LIBRUS_API_OTHER
                     }.let { errorCode ->
-                        data.error(ApiError(tag, errorCode)
-                                .withApiResponse(json)
-                                .withResponse(response))
-                        return
+                        if (errorCode !in ignoreErrors) {
+                            data.error(ApiError(tag, errorCode)
+                                    .withApiResponse(json)
+                                    .withResponse(response))
+                            return
+                        }
                     }
                 }
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiAnnouncementMarkAsRead.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiAnnouncementMarkAsRead.kt
index 9e08631c..b3189deb 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiAnnouncementMarkAsRead.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/api/LibrusApiAnnouncementMarkAsRead.kt
@@ -5,6 +5,7 @@
 package pl.szczodrzynski.edziennik.data.api.edziennik.librus.data.api
 
 import org.greenrobot.eventbus.EventBus
+import pl.szczodrzynski.edziennik.data.api.ERROR_LIBRUS_API_INVALID_REQUEST_PARAMS
 import pl.szczodrzynski.edziennik.data.api.POST
 import pl.szczodrzynski.edziennik.data.api.edziennik.librus.DataLibrus
 import pl.szczodrzynski.edziennik.data.api.edziennik.librus.data.LibrusApi
@@ -22,7 +23,8 @@ class LibrusApiAnnouncementMarkAsRead(
     }
 
     init {
-        apiGet(TAG, "SchoolNotices/MarkAsRead/${announcement.idString}", method = POST) {
+        apiGet(TAG, "SchoolNotices/MarkAsRead/${announcement.idString}", method = POST,
+                ignoreErrors = listOf(ERROR_LIBRUS_API_INVALID_REQUEST_PARAMS)) {
             announcement.seen = true
 
             EventBus.getDefault().postSticky(AnnouncementGetEvent(announcement))
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/login/LibrusLoginSynergia.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/login/LibrusLoginSynergia.kt
index 3e11d502..4ee10e82 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/login/LibrusLoginSynergia.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/login/LibrusLoginSynergia.kt
@@ -70,7 +70,7 @@ class LibrusLoginSynergia(override val data: DataLibrus, val onSuccess: () -> Un
             loginWithToken(json.getString("Token"))
         }
 
-        apiGet(TAG, "AutoLoginToken", POST, null, onSuccess)
+        apiGet(TAG, "AutoLoginToken", POST, onSuccess = onSuccess)
     }
 
     private fun loginWithToken(token: String?) {
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/announcements/AnnouncementsFragment.java b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/announcements/AnnouncementsFragment.java
index baad7018..bbc02b8b 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/announcements/AnnouncementsFragment.java
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/announcements/AnnouncementsFragment.java
@@ -109,7 +109,7 @@ public class AnnouncementsFragment extends Fragment {
                     return;
                 }*/
                 AnnouncementsAdapter announcementsAdapter = new AnnouncementsAdapter(activity, announcements, (v, announcement) -> {
-                    if (announcement.text == null || (app.profile.getLoginStoreType() == LOGIN_TYPE_LIBRUS && !announcement.seen)) {
+                    if (announcement.text == null || (app.profile.getLoginStoreType() == LOGIN_TYPE_LIBRUS && !announcement.seen && app.networkUtils.isOnline())) {
                         EdziennikTask.Companion.announcementGet(App.profileId, announcement).enqueue(requireContext());
                     } else {
                         showAnnouncementDetailsDialog(announcement);
@@ -157,7 +157,7 @@ public class AnnouncementsFragment extends Fragment {
                 .show();
         DialogAnnouncementBinding b = DialogAnnouncementBinding.bind(dialog.getCustomView());
         b.text.setText(announcement.teacherFullName+"\n\n"+ (announcement.startDate != null ? announcement.startDate.getFormattedString() : "-") + (announcement.endDate != null ? " do " + announcement.endDate.getFormattedString() : "")+"\n\n" +announcement.text);
-        if (!announcement.seen) {
+        if (!announcement.seen && app.profile.getLoginStoreType() != LOGIN_TYPE_LIBRUS) {
             announcement.seen = true;
             AsyncTask.execute(() -> app.db.metadataDao().setSeen(App.profileId, announcement, true));
             if (recyclerView.getAdapter() != null)