Prosites not working on main site Sorry, but it appears you are not an administrator

On a subsite I have a members only website (sub-site not main) and we want to offer blogs but only 1 option only paid no free basic. I use ultra users and their signup form and I need to send them back to the main site http://oildab-a-doers.com/team-pro-site/ so members only can sign up for their blog. But when I do that the page says "Sorry, but it appears you are not an administrator for any sites." I dont want to offer a basic free option we only want 1 option and that is a prosite. My other option is to create member sites manually but I am trying to avoid that. I have enabled access.