diff --git a/app/build.gradle b/app/build.gradle
index 4d53481b..f1345fb1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -72,7 +72,7 @@ play {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation('com.github.wulkanowy:api:46f09bdf34') { exclude module: "threetenbp" }
+    implementation('com.github.wulkanowy:api:ea81799e98') { exclude module: "threetenbp" }
 
     implementation "androidx.legacy:legacy-support-v4:1.0.0"
     implementation "androidx.appcompat:appcompat:1.0.2"
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt
index b751f8c5..6d388471 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt
@@ -26,7 +26,7 @@ class MessageRemote @Inject constructor(private val api: Api) {
                     sender = it.sender.orEmpty(),
                     senderId = it.senderId ?: 0,
                     recipient = it.recipient.orEmpty(),
-                    recipientId = it.recipientId,
+                    recipientId = 0,
                     subject = it.subject.trim(),
                     date = it.date?.toLocalDateTime() ?: now(),
                     folderId = it.folderId,
@@ -50,7 +50,7 @@ class MessageRemote @Inject constructor(private val api: Api) {
             recipients = recipients.map {
                 ApiRecipient(
                     id = it.realId,
-                    realName = it.realName,
+                    name = it.realName,
                     loginId = it.loginId,
                     reportingUnitId = it.unitId,
                     role = it.role,
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt
index f3ef3ee2..21f49649 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt
@@ -17,12 +17,12 @@ class RecipientRemote @Inject constructor(private val api: Api) {
                     Recipient(
                         studentId = api.studentId,
                         name = it.name,
-                        realName = it.realName,
+                        realName = it.name,
                         realId = it.id,
                         hash = it.hash,
                         loginId = it.loginId,
                         role = it.role,
-                        unitId = it.reportingUnitId
+                        unitId = it.reportingUnitId ?: 0
                     )
                 }
             }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt
index 2bd51eac..9b7912d1 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt
@@ -130,6 +130,7 @@ class GradeStatisticsFragment : BaseSessionFragment(), GradeStatisticsView, Grad
 
     override fun showSubjects(show: Boolean) {
         gradeStatisticsSubjectsContainer.visibility = if (show) View.VISIBLE else View.INVISIBLE
+        gradeStatisticsTypeSwitch.visibility = if (show) View.VISIBLE else View.INVISIBLE
     }
 
     override fun clearView() {
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsPresenter.kt
index 073231c0..c383ec8b 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsPresenter.kt
@@ -74,6 +74,7 @@ class GradeStatisticsPresenter @Inject constructor(
 
     fun onTypeChange(isSemester: Boolean) {
         Timber.i("Select attendance stats semester: $isSemester")
+        disposable.clear()
         view?.run {
             showContent(false)
             showProgress(true)
diff --git a/app/src/main/res/layout/fragment_grade_statistics.xml b/app/src/main/res/layout/fragment_grade_statistics.xml
index 2fcb1196..9c7f3795 100644
--- a/app/src/main/res/layout/fragment_grade_statistics.xml
+++ b/app/src/main/res/layout/fragment_grade_statistics.xml
@@ -56,7 +56,9 @@
                     android:layout_gravity="center"
                     android:gravity="center"
                     android:orientation="horizontal"
-                    android:paddingTop="5dp">
+                    android:paddingTop="5dp"
+                    android:visibility="invisible"
+                    tools:visibility="visible">
 
                     <RadioButton
                         android:id="@+id/gradeStatisticsTypePartial"
@@ -82,10 +84,10 @@
                         android:id="@+id/gradeStatisticsChart"
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
+                        android:layout_margin="10dp"
                         android:background="?android:attr/windowBackground"
                         android:minHeight="400dp"
                         android:visibility="gone"
-                        android:layout_margin="10dp"
                         tools:visibility="visible" />
 
                     <ProgressBar
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index a311572a..54bceb9b 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -60,7 +60,7 @@
     <string name="grade_summary_calculated_average">Obliczona średnia</string>
     <string name="grade_summary_final_average">Końcowa średnia</string>
     <string name="grade_menu_summary">Podsumowanie</string>
-    <string name="grade_menu_statistics">Oceny klasy</string>
+    <string name="grade_menu_statistics">Klasa</string>
     <string name="grade_menu_read">Oznacz jako przeczytane</string>
     <string name="grade_statistics_partial">Oceny cząstkowe</string>
     <string name="grade_statistics_semester">Oceny semestralne</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4a2cc916..b51387e9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -60,7 +60,7 @@
     <string name="grade_summary_calculated_average">Calculated average</string>
     <string name="grade_summary_final_average">Final average</string>
     <string name="grade_menu_summary">Summary</string>
-    <string name="grade_menu_statistics">Class grades</string>
+    <string name="grade_menu_statistics">Class</string>
     <string name="grade_menu_read">Mark as read</string>
     <string name="grade_statistics_partial">Partial grades</string>
     <string name="grade_statistics_semester">Semester grades</string>