I recently got this game on the Epic store, but when I try to play the Campaign, all my options are greyed out saying "Requires purchase of the base game". Multiplayer is also greyed out, saying "You must be logged onto Epic in order to play multiplayer". I own the game and am connected, but have not be able to get it to work. I've tried restarting, uninstalling and reinstalling in different locations, and haven't seen any connection errors in the Epic troubleshooting page.