diff --git a/app/build.gradle b/app/build.gradle
index 70a7de7f..8a721d8e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -161,7 +161,7 @@ dependencies {
 
     implementation "org.redundent:kotlin-xml-builder:1.5.3"
 
-    implementation "io.github.wulkanowy:signer-android:0.1.0"
+    implementation "io.github.wulkanowy:signer-android:0.1.1"
 }
 repositories {
     mavenCentral()
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/VulcanApi.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/VulcanApi.kt
index b9ebda85..0345c0a0 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/VulcanApi.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/VulcanApi.kt
@@ -40,7 +40,7 @@ open class VulcanApi(open val data: DataVulcan) {
         d(tag, "Request: Vulcan/Api - $url")
 
         if (data.teamList.size() == 0) {
-            data.profile?.getStudentData("studentClassName", null)?.also { name ->
+            data.profile?.studentClassName?.also { name ->
                 val id = Utils.crc16(name.toByteArray()).toLong()
 
                 val teamObject = Team(
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/api/VulcanApiEvents.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/api/VulcanApiEvents.kt
index c24129b6..d971118c 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/api/VulcanApiEvents.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/data/api/VulcanApiEvents.kt
@@ -63,7 +63,7 @@ class VulcanApiEvents(override val data: DataVulcan, private val isHomework: Boo
                         else -> Event.TYPE_EXAM
                     }
                 }
-                val teamId = event.getLong("IdOddzial") ?: data.teamClass?.id ?: return@forEach
+                val teamId = event.getLong("IdOddzial") ?: data.teamClass?.id ?: -1
 
                 val eventObject = Event(
                         profileId,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/firstlogin/VulcanFirstLogin.kt b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/firstlogin/VulcanFirstLogin.kt
index 3d0b0a44..61f38f53 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/firstlogin/VulcanFirstLogin.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/api/v2/vulcan/firstlogin/VulcanFirstLogin.kt
@@ -44,7 +44,7 @@ class VulcanFirstLogin(val data: DataVulcan, val onSuccess: () -> Unit) {
                     val studentId = student.getInt("Id") ?: return@forEach
                     val studentLoginId = student.getInt("UzytkownikLoginId") ?: return@forEach
                     val studentClassId = student.getInt("IdOddzial") ?: return@forEach
-                    val studentClassName = student.getString("OkresPoziom").toString() + student.getString("OddzialSymbol")
+                    val studentClassName = student.getString("OkresPoziom").toString() + (student.getString("OddzialSymbol") ?: return@forEach)
                     val studentSemesterId = student.getInt("IdOkresKlasyfikacyjny") ?: return@forEach
                     val studentFirstName = student.getString("Imie") ?: ""
                     val studentLastName = student.getString("Nazwisko") ?: ""
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/Edziennik.java b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/Edziennik.java
index e21a12dc..7b9997ca 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/Edziennik.java
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/Edziennik.java
@@ -1161,6 +1161,13 @@ public class Edziennik {
         app.db.teamDao().clear(profileId);
         app.db.messageRecipientDao().clear(profileId);
         app.db.messageDao().clear(profileId);
+        app.db.endpointTimerDao().clear(profileId);
+        app.db.attendanceTypeDao().clear(profileId);
+        app.db.classroomDao().clear(profileId);
+        app.db.lessonRangeDao().clear(profileId);
+        app.db.noticeTypeDao().clear(profileId);
+        app.db.teacherAbsenceDao().clear(profileId);
+        app.db.teacherAbsenceTypeDao().clear(profileId);
 
         int loginStoreId = profileObject.getLoginStoreId();
         List<Integer> profilesUsingLoginStore = app.db.profileDao().getIdsByLoginStoreIdNow(loginStoreId);