The current pre-release of the client ("pioneer" in the version) is only compatible to itself. So you can only play with other testers. Please be aware!
Perhaps the Cyrillic characters caused an exception or random bug.
Can you share your client.log, please? You can navigate to it via the FAF Client:
[image: 1788406392927-e783ce15-921b-4ec6-9393-4b39014d0b7f-image.png]
