mk7 bluetooth not working

[whoopty]

Hi all I have a mk7 with a blaupunkt head unit, the Bluetooth has stopped working. Not picking up a phone and not being picked up by any phone.
I only noticed after fitting a rear view screen which takes its power from the interior light. Iv disconnected the screen and it still doesn't work.
Any help appreciated

[loot]

Does the radio work still tho?
Is it Ford fitted1?
F73 15A in the bcm is the main power fuse for it.f82 2A ius the ignition sense (live with key)
Also check fuse 66 15A

[TripleSix]

Disconnect the battery(s) overnight, see if that helps