I have tried setting up both mi band bridge apps (separately), and they both managed to record live accelerometer and heartrate data.
In each app, I have checked that sleep integration is enabled.
I bought the pro version of all apps, including sleep.
However, whenever I try to test sensors or start sleep tracking, I am stuck for a minute on the “waiting for connectivity” screen. After the timer, sleep defaults to accelerometer data.
Version of Sleep as Android: 20220118