I’ve also tried names likes H9P1 through H9P5 – so it’s not related to special characters. I’ve set the name both through H9Control and on the pedal itself – so it’s not just the app or the pedal. Both the pedal and the iPad Bluetooth discovery name retain the name change, H9Control app is the one that forgets the ANY name after either an H9 power cycle. H9Control app reverts to H9-SerialNumber format for each device name. It’s really annoying once you have 5 H9’s and two iPad’s to have to set it all up again.
