The user is not authenticated FCM error Sendbird calling

I have a problem with registering Sendbird calling push notification, I got a “the user is not authenticated” error with 1800303 code.

I did a debug to the above authentication method, and it returns success with the null user, so if you try to check the current Sendbird user after, it returns null even if the user successfully authenticated.

so the user will end up not registering push notification, btw It happens just on the release store version, it works well with debug versions.

what could be the issue? thank you in advance!