@ZacharyPerry11 I assume you meant for Stadia Pro? If you have purchased a game, it's still playable even if your Pro sub ran out.
You can reactivate Pro sub by yourself. I can't test since my sub is still active, but if you open up the app, it should have instruction on how to reactivate. Can you give it a shot? If still having issue, please report back and we can take a look at it again.