My battery protect, & BMV712, unpaired themselves with the recent app update and suddenly are in need of a ”code displayed on.....“ whatever. These and the charge controller have been installed and trouble free for over a year. Research told me that I need a PUK code on the device which is alphanumeric. The data entry on the iPhone app is numaric only. I removed the bluetooth from my iPhone, disconnected the batteries for a short while, etc. no help. Same issue. 000000 didn’t work either. The solar charger pairs just by pressing continue w/o entering anything, but then it has power removed when the Airstream is in storage. The battery protect is difficult to access (which is why we bought the Bluetooth!) What is a guy supposed do do?