diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 5f55725a..10a5ba6a 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -216,6 +216,7 @@
     <string name="dms_inbox_raven_media_suggested">Navrhované</string>
     <string name="dms_inbox_raven_media_screenshot">Udělán snímek obrazovky</string>
     <string name="dms_inbox_raven_media_cant_deliver">Nelze doručit</string>
+    <string name="dms_inbox_error_null_count">Unseen count response is null!</string>
     <string name="dms_thread_message_hint">Message...</string>
     <string name="dms_thread_audio_hint">Press and hold to record audio</string>
     <string name="dms_thread_updating">Updating...</string>
@@ -224,6 +225,9 @@
     <string name="dms_action_leave_question">Chcete opustit tento chat?</string>
     <string name="dms_action_kick">Vyhodit</string>
     <string name="dms_left_users">Uživatelé, kteří skupinu opustili</string>
+    <string name="dms_ERROR_INVALID_USER">Invalid user</string>
+    <string name="dms_ERROR_VIDEO_TOO_LONG">Instagram does not allow uploading videos longer than 60 secs for DM.</string>
+    <string name="dms_ERROR_AUDIO_TOO_LONG">Instagram does not allow uploading audio longer than 60 secs.</string>
     <string name="direct_download">Stáhnout přímo</string>
     <string name="direct_download_desc">Stahuje příspěvky přímo do telefonu!</string>
     <string name="direct_download_loading">Načítání příspěvků</string>
@@ -496,4 +500,7 @@
     <string name="secs">secs</string>
     <string name="mins">mins</string>
     <string name="search_giphy">Search GIPHY</string>
+    <string name="generic_null_response">Response is null!</string>
+    <string name="generic_not_ok_response">Response status is not ok!</string>
+    <string name="generic_failed_request">Request failed!</string>
 </resources>