Pro Sites - Upgrade Link Doesn't Work

When trying to display the upgrade (ie... /pro-site/?bid=1) it keeps going back to /pro-sites. It's like it doesn't see the bid=1. I try to do a var_dump of $GET['bid'] in pro-sites.php and no matter what, it's allways null, so it will never get past if ($blog_id) { , any ideas why it's not pulling blog_id from the url?