Registration is a two step
Part one is completing the registration form
Part two is replying to a confirmation email that is sent out after a few minutes of completing step 1. If you have not received this confirmation email you can re-request the codes via this activation code link
Please also make sure that our email notifications sent via the site are not getting caught in any SPAM software that you might have running or getting caught in any SPAM folders. If you do have software blocking such emails you can add "firstname.lastname@example.org" to your allowed list of mail recipients.