UNSOLVED Teleports: not able to recieve messages in encrypted chats

[flaun*in]

Since today it's not possible anymore to receive messages in encrypted chats. The other persons still gets my messages but I don't receive anything. There is just a push notification, nothing else. The teleports app looks like searching for net (dark blue line under the search field moving from left to right). All the other chats unencryptet chats work without any problem.
In the logfile comes up this error:

SecretChatActor.cpp:698][#1][!SecretChat -975989011]	Non-fatal error: [Error : 1 : Unknown [auth_key_id:XXXXXXXXXXXXXXXX] 

There was no current update on teleports. Just a Ubports update (I am on the current rc-channel, Meizu MX4).

Any ideas? anyone else facing this problem? Thanks