I just got my Rebel, and I've been trying to create an account there for days, but I get the following error:
Registration denied. We check new registrations against a database of known forum spammers. At this time, we are unable to contact this database to verify your registration. We are sorry for the inconvenience but please do try again later.
I've tried e-mailing the webmaster, no response. Is that a dead forum? There seems to be plenty of user activity...
You may way to look into your sign up flow and/or reach out to this person on Facebook