I bought the game through Steam today. I have a steam key in the format of WARB-xxxx-xxxx-xxxx-xxxx-xxxx
When I click multiplayer, and find a server to join and click on it, then I am prompted to input my cd key. When I do, it fails to authenticate. I have tried putting it with/without hyphens, with/without WARB part at the beginning, etc... This is very frustrating. What do I need to do?