I have already written about this problem, but unfortunately I did not receive any response from the developers. The face mirror setup hasn't been working correctly for quite some time now, I can't say the exact version of the update when it happened, but it hasn't worked since about January 2025. The only thing you can do is zoom in or out the avatar in the mirror. I can't move my face mirror, zoom it out, or make it more transparent. My device is Samsung Galaxy a34 5g 6GB RAM one ui 8, android 16, but this problem occurs on absolutely all devices.