I just tried again after a year ... the problem is even worse than before, I gave it time now they don't even show up on the bluetooth list after the latest update to 3.0.4. Also the assistant voice has slowed down to a slow groan while speaking. It doesn't work with any device or show up on any list any more.
To be clear I followed all reset steps and these headphones have never once worked properly. Constant disconnect / reconnect.