I'm in the UK and I've tried everything to get this to work on the Xbox Windows 10 app. My accounts are linked correctly according to both EA and Microsoft but the Xbox PC app still asks to download the EA desktop app every time. Clicking to download just tells me that it can't download and to do so manually myself instead. I did this but the EA app asks me to pay 3.99 for a subscription before I can download a game. Going back to the Xbox PC app just asks me to download the EA app again!
I have tried restarting one app then the other, restarting only the Xbox PC app, restarting only the EA app and even rebooting my PC twice and then uninstalling the EA app altogether and I am still no further forward!
I don't have an Xbox now, only a PC and I have been using Game Pass for Windows for quite a while without problems until now. The only thing I can think of is that I also have a linked account for EA with Steam...could that be causing problems? My sub with Steam expires in a few days (I currently have no EA games installed) so thought I would be able to switch over to Game Pass with no problems.
*EDIT*
Right, I don't know quite what I've done but I now have it working. I closed the EA app completely using task manager after signing out. I also signed out of the account through the web browser. Confirmed on the Xbox app that account was still linked (though clicking install on any EA game just tells me again to download the EA app which it won't do, of course). Opened the EA app once more and this time instead of logging in with email, I chose to log in with EA ID instead. The app then crashed (!) then restarted, then crashed again (!!) then finally restarted and now says that I have EA Play membership with Game Pass!!!
The Xbox app still demands that I download the EA app so I don't even bother clicking anything in there now as long as the EA app works 🙌