Meeting fail client incompatible 5.7

I am trying to join a meeting without login, but i cant. After start, i get this error: status: MEETING_STATUS_FAILED, reason: MEETING_FAIL_CLIENT_INCOMPATIBLE, errorCode: undefined.
GSM encryption is enabled.
If I turn of GSM encryption - meeting will start successfully.
ZSDK version:
5.7.6.1340