Can’t help: the device keeps freezing. After replacing all cables and connections involved i can cicrle down the behavior.
Unlike i stated, the H9 freezes on preset change while getting MIDI clock continuously. It happens randomly, but within a minute of playing around. The H9 simply does not switch to the new preset, the bluetooth connection breaks and it keeps processing the preset chosen before the crash. At this time, no elements/knobs on the H9 are responding anymore.
My MIDI clock setup works flawlessly with a dozen devices connected. As long as there’s no MIDI-in used on the H9 the device works with a charme.