I've find out a fix 'not conventional', that will add the user as we need. Without adding filters or rewriting concept.
Before this night hope to setup ... we just need to update the wp_w3all_phpbb class to add user in the way we want. As i've see that if i set an WP username with chars as phpBB manually on db, the user can login with this!
so solved .... easy to solve, VERY, BUT VERY IMPORTANT FIX!! 1.3.0 coming ...
