Register with Facebook

Facebook works to connect from the wp-login page. However from http://coachrss.com/register/?action=registeruser&subscription=1

which you get to from my regular coachrss.com/register

page there is an error.Unable to load the registration form for CoachRSS Sign In. You may have previously blocked this app on Facebook. Go to your Facebook privacy settings to unblock this app. (Error: That 'redirect_uri' isn't allowed for that client_id.)

The app has permission because it works from the other page.

I'm assuming it's a setting inside either facebook or membership. Can someone please advise a problem solve?

I still haven't figured out the mapping does that happen to have anything to do with my extended profiles?