Ok, just looked on a real computer and not my phone.
You have a bad or unconfirmed email address.
The forum would've sent you an email to confirm your email when you signed up. Check the email that you used to make sure that it didn't go into a spam folder or junk folder.
Click the link in that email and you should be good to go.
If you can't find it, I can send you another one.
mac 'confirm it!' gyvr