Hello Sorry late reply,
All i did was as i already had the code given to me upon trying to install to the desktop instead of desktop for the mobile meta application, so when i read that the only way to unpair the meta quest was thru the mobile by unpairing it after installing the Meta application having to use your 5G wi-fi and Bluetooth to pair to you meta quest headphone. so, once that was done, which as of yet i haven't unpaired it as i was just happy to leave the way it is for now working fine also watch YouTube on it movies etc.
Make sure you Meta Quest Headset, is fully recharged and started fresh, Once you install the Met Application on your mobile phone or Tablet which i use and have the 5g connected also Bluetooth turned on, it will show to choose your headset by picture, once you tap your model showing it will search to connect to your headset, then your model will show only, as it has recognized it. Put your Headset on and the screen will come up with a tutorial on how to use. just follow it.
i hope it not confusing what i wrote here, if you get stuck, let me know, i am not sure on your side what has occurred😁.