How to get Mac and Bluetooth in place
If you use Bluetooth headphones, try to check the settings.
Activate the Bluetooth menu by holding down Shift+Alt simultaneously, the command we are interested in appears: Debug.
Or at least it should appear: if there is no Bluetooth device already paired with the Mac, it may remain hidden.
Toggle (off and back on) the MIDI button in the toolbar
In order of "severity" of intervention for Bluetooth problems:
- Remove all devices to reset the pairing settings and start over;
- Restore factory settings to restart from "clean" Mac and peripheral configurations;
- Restore the Bluetooth module.