Well, I've bought this game, and nothing ever happend. I've listened to everything everyone has told me. Nothing has worked. I remember the password, email, and everything. Guess my 18$ is gone now.
I've seen two others with a similar problem. I'm either stupid, or it's broke.

Have you tried going to the licensing site and putting your info in there?

Yeah, I've tried a lot of differnet usernames and passwords and stuff all being info I put in when I bought it and nothing worked. What's the username and password supposed to be?

Username is the email you bought Cortex with, password is the key or gift code you were given, if I remember correctly.

However, what do you mean by "nothing happened"? If you could explain more about that, we might be able to help better.
Something along the lines of never getting a confirmation email? You got the game but you're unable to play it? Please clarify.