Registering Cubase Elements 8

I just installed Elements 8 on my MacBook Pro. I can’t login to register Elements at MySteinberg. It says invalid username or password. But I can login to this forum. Don’t I use the same username and password as I do on the forum?
Isn’t that my account info?

No, MySteinberg accounts don’t actually have anything to do with the forums. You’ll have to create one by clicking “Create account” here:

It’s pretty quick and easy.