Mobile App dont get updates


i have a rocketchat on a server behind a reverse proxy. Desktop app and Webgui works correctly.

But my mobile app dont work. If anybody write in channel or directly, i dont get any message. i have to click in the channel or on the person to see the message. after click it update only this one channel.

i tested it with 4 people. all have the same problem.

May i forgot a port or something?

Version 1.0.3
Univention Corporate Server with rocketchat.

best regards

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