I too am curious if 2 H9s can be paired via bluetooth simultaneously with a single computer in the Control app. I haven't yet been able to achieve that. I've gotten 2 H9s paired with an iPad, but not with a macbook. Wondering if it's just not currently possibly…
It is possible to pair multiple H9s to a Mac. Up until about a year ago, we never heard about people having trouble connecting their H9s to their Macs, but about a year ago, people starting having a lot of connectivity problems. It doesn't affect all users on the most recent versions of mac OS (Sierra and High Sierra), just some. We have submitted Bluetooth connectivity logs to Apple in the hopes that they'll investigate and fix the different problems that people have been having.
