The game is worth it. I think the issue involves the computer you are using. From what I have read, you are able to install the game. You can execute and the game start window pops up, but then you are unable to login. You said you are Admin and that the firewall is disabled.
Have you listed WT in your security exceptions? This would enable program communication? You say you have your firewall turned off, do you have more then 1? I have one for my security program and one for windows.