Bluetooth troubles

[katpetrova]

Hey. Since two days I have problems with Bluetooth connection.
Phone: Xiaomi 11T; Miui 13.0.8
Dexcomone sensor and transmitter;
Transmitter new-13 days;
Sensor restarted- working the whole 10 days with absolutely no issues, 3 days after restart;
No updates of the phone made, Android version 12;
Nothing change in xdrip, version 3.08.22.
Tried restarting phone, restart collector, Bluetooth on and off. Helps for some readings and then the same.
The phone has been working properly for almost a year with no issues.
Any advice would be really appreciated 😌