I’ve tried contacting meta support and they did some very basic troubleshooting then said as it’s out of warranty they can’t do anything more.I know that you've tried 3 networks, but you you might be able to create a wifi network hotspot with your phone, and as your phone is already connected to the headset via blutooth, the headset may connect more readily. Failing that you may have to contact meta support.
I’ve already tried using my phone as a normal hotspot with no luck, are you meaning something else?