I had a similar situation. After getting it to work only by deleting various Blue Toothe prefs and restarting, it eventually just stopped working, no matter what I did.
Then Eventide came out ith the Beta version of H9 control for Android, which works great! Honestly, I would much rather use the app on my phone than the one on the computer, as it’s much less bulky. Do you own a smart phone? If so, I recommend ditching the computer and going with the app on your phone. I hope that it might work fo you, too.