You've lost me there on bothoo Stu...
Get diagbox on it and see if there are any codes. If not run some actuator tests, which will indicate if the button pushes are working or not.
As for Bluetooth what is not working exactly?
Try first unpairing ALL devices from both phone and Head Unit
Then do a
BSI Reset / Battery Disconnect / Reconnect Procedure
Then repair first using the head unit. If that solves the bluetooth issue, fine, if not:
Unpair all devices again from phone and head unit, then re-pair again, but this time pair from the mobile not the head unit.
Bear in mind that after a reset or unpairing of the phones, it can take a while to syhcnronise the contacts again.