HOWTO make your user page public
From AIRWiki
Each User page is, by default, private in the wiki's private layer and then accessible to registered users only.
If any User would like to make his page public, an administrator has to modify the Lockdown.php file on the Web Server as explained in the official documentation of Lockdown plugin (which handles the access rights on pages).
Actually the people who has access to this file are: User:DavideEynard, User:DavidLaniado or User:RiccardoTasso.