After you join our websites, you'll receive an email containing your account details.  

Did you know, on our 2D websites- You can use your e-mail address as your username?

Try logging in with your email address as the "username" along with the password you suggested when you signed up. 

If the solution above does not work click here for details on how to perform a password reset. The password reset will send you all the details for your account.