Got it wrong I guess. Okay so:
There's no way to register , unless you are logging through OpenID ( Steam ) , the default signup page is blank and redirects you to the OpenID (steam) page , after that you put user and done. After that , login could be only done using the OpenID.
The plugin was added 30+ mins ago. Topic posted 12 mins ago , can't check registration date ( can't find it ) altough I think he registered right before his post.