Hi, in October I paid a third party seller on Ebay for 1 month Game Pass and wasn't aware at the time that this was possibly linked to a bt/ee account (I presumed they was just trails people got). I now have no option to change it and have tried contacting the seller who is not replying. Using the Game Pass app I can see my Game Pass expires on 1st April 2024 but I'm wondering if there's any way I can switch this over now, thank you.
There are numerous posts similar to yours where pass bought from 3rd party who will not respond and presumably you are not a BT customer. You need to contact Microsoft and see if they can help you