DLC’s showing as installed but not there after linking EA to Steam

I linked EA to Steam and my game wouldn’t load. I uninstalled it and reinstalled it, it loaded, but came up with an error saying “game data incomplete”, with all my expansion packs showing as not installed. However when I then check the EA app, they all say installed, and there’s no option for me to install/uninstall. I’ve uninstalled and reinstalled the game yet again, and loaded it countless times, with no change. I’ve also disconnected the two accounts to see if that helped, which it didn’t.