EA FC 26 PS Plus Edition Showing as Showcase – Unable to Access Full Game

I recently claimed EA FC 26 because it was a free Standard Edition on PlayStation with PS Plus, and I installed it to play with friends, but it's showing the Showcase version, which is incomplete.

I already installed it on a Mexican account to play Showcase, and it seems to have kept that version. Even though I deleted all my save data before installing. It also won't let me upgrade to the full version; it gives me an error. I can't play the full version, help me please.