Hi, I am not sure you solved this, but I have the same problem on a mac, the timefactor is only working via MIDI, usb is not working no more.
Any tips are welcome. swoftware is up-to-date and also the H9…
Could you open up the Audio MIDI Setup app on the Mac and see if your TimeFactor is appearing there as a MIDI device?
There are some other trouble shooting tips in the H9 Control manual: