What can I do if I miss messages or pictures on my Android device?

In case you are missing messages or pictures please do the following:

1. Force close the app on your device and reopen.

2. If this is not helping, try a synchronisation. This performs a full synchronization with the server.

In the conversation list:

1. Tap your profile in the upper left corner.
2. Tap  Settings.
3. Tap Advanced.
4. Tap Perform full synchronisation and tap OK.