I’ve paired it with my MacBook Pro (sierra) a dozen times now. It reports success, but the H9 doesn’t stay connected, according to the MBP Bluetooth prefs, for more than a minute or so. The H9 control app on the Mac never ‘sees’ it, even when it says connected (after pairing).
After a few minutes, the device shows a ‘Pair’ button again in Bluetooth prefs… but I just paired it and it agreed we were paired, a minute ago!
Meanwhile, the Android app connects fine from my phone.