How can I register or login to the forum?When you register for the game you only receive an account for the game itself. You will need to register for the forum separately. When registering you will need to use your game credentials (username and password) in order to create your forum account.
For this to work, you will need to have a validated email address in the game. If you haven't already, you can find more information here.
Once your email account is validated, you can create your forum account by clicking to the Register button on the forum's main page.
If this didn't help, feel free to contact our customer support and they will be happy to look into your issue!