Hi Nick, thanks for the answer.
I just tried connecting the H9 to the Control app over DIN, but I get the 'Device not found' screen. When I then try to use my midi interface as the manually selected device, I get the 'H9 control unable to open the midi input' message again. Control will only recognize the pedal over usb. Is this normal behavior? Or should Control be able to communicate with the pedal over DIN as well?
I suspect that something is blocking the H9's ability to communicate with any of my midi interfaces (of which I have two, both tested with the H9 with no luck). Very frustrating!