Level Comander is 5. Co-op game

I just spent another $40 on this game. One that I already own but the game keeps telling me that I have the F2P version. So I’ve already been told that I can NOT get a refund, my Co-op is still telling me that I need to spend money to be able to play. Is this a joke Like WHAT ELSE DO I NEED TO BUY SEND ME THE LINK. $200 ALREADY SPEND ON SCII. What do I need to buy?