Trial not working

I've recently paid for an EA Play subscription (£5.99 per month), and my Xbox confirms that the subscription is active.
I'm trying to access the 10-hour EA SPORTS FC 27 trial so I can play Ultimate Team without purchasing the full game.
However, whenever I launch FC 27, it keeps opening the FC 27 Lite version, which only gives me limited game modes and doesn't include Ultimate Team.
I've tried downloading the Xbox Series X|S version and accessing the Free Trial with EA Play option in the Microsoft Store, but it says I already own the game and sends me back to the Lite version.
Could you please check why my EA Play subscription isn't allowing me to access the full 10-hour trial?
I would appreciate help getting the trial working, as I've paid for EA Play specifically to access it. I don't want to have to purchase the full game yet, I've tried everything through xbox support and nothing works, I've paid for this and im not getting what I've paid for, can someone help, my ea account is DYL4Nii