I have issues with connecting my Redragon k530 keyboard after upgrading to macOS Monterey.
As soon as I turn off my keyboard and turn it back on, it gets reset for no reason and I have to remove it from the Bluetooth list and pair it again.
I checked its logs with an app called "BlueSee" and I found this error in logs:
22:08:47.8950: failed to connect in underlying BLE layer: Error Domain=CBErrorDomain Code=14 "Peer removed pairing information" UserInfo={NSLocalizedDescription=Peer removed pairing information}
22:08:47.8960: state changed to 'Disconnected' with error: Peer removed pairing information