You need to enter an e-mail address when you register for an account on the Official Spacetime Studios Message Forums. As you proceed to finish the registration, the forums will send you an e-mail with a link that you need to click to finish creating your account. If you do not click the link, you will not be able to post.
Please click the activation link in the email you were sent, or visit the page at: https://www.spacetimestudios.com/register.php?do=requestemail to resend the activation email.
If you did not receive the email then it's possible it was blocked by your email client. In this case you can either disable your blocker software or enter a new email address in your profile at: https://www.spacetimestudios.com/profile.php?do=editpassword
After registering and activating your forums account, there will be some new account restrictions that prevent posting a new Thread right away. You'll just have to make a number of posts on existing Threads, approximately 10-15, before this restriction will be automatically removed from your account.