I'm confused about whether H9 Control running on a Mac is supposed to be able to link to the H9 pedal via Bluetooth ? It doesnt work for me so far. But there's no problem linking with my iPhone.
Yes, this should work fine for you. A lot of people are using this feature. The H9 Control manual has some instructions on connecting via Bluetooth on a Mac:
Also, if you're running OS X 10.10 or higher you should make sure that you're using the build of H9 Control made for 10.10 or higher.