I can't open FC 24

I bought FC 24 on my PC a few months after it came out, and everything was fine with it for a while. One day, after an update had completed, I tried to open the game, but whatever I tried, it didn't open- on epic games (where I bought it), whenever I tried to launch it, it would show that it was launching, but revert back and show an error page. When i tried to open it on the EA app, it showed 'update complete' and it used to show up in my library, but would again say there was an error. Eventually, it stopped even showing up in my EA library and start asking me to re-purchase whenever I tried to open it. I need help to move on with this and either get the game back, or a full refund for the game. How can I contact someone from EA to figure this out?