Star Wars Battlefront II doesn't launch

I recently reinstalled Star Wars Battlefront II, but I saved it in a different location than the original download from Epic Games. As a result, Epic Games can no longer detect the game, and if I start it through EA, it starts in Epic Games which doesn't start the game but just says it is starting. I cannot uninstall or change the storage location for Battlefront II in Epic Games since it no longer recognizes the game.