When you register for the SynApp2 Forums, fill out ONLY the username and email fields on the sign-up page.
In an effort to foil the registration spam-bots, I've set the sign-up page to unceremoniously reject registration attempts that include web-site address, location, interests, etc. If you enter anything but the username and email fields, you'll just get a blank page.
BTW: I don't use your email address for anything except to return a password to you when you register for the forums.