about a message when successfully connected:
if the path isn’t well configured, “WP w3all miss phpBB config” message appear on front end (until wp_w3all active). Remember also that until WP admin isn’t also logged on phpBB, when open front-end page, will be logged out from wp.
After all well configured, open front-end (if logged as an admin only on wp-admin, so you’ll be logged out) login now on phpBB, (remember that default admin install on phpBB is switched onlogin on WP to the related WP install admin) maybe using the login widget, and you’ll be logged in also on WP back/front-end as wp admin (and as all others users)
About avatars, i’m looking on, hope on next (soon) release.
About wordpress side registrations: it can be done, but also the integration work ok as is.
‘Exclude certain forums’ from last post will be also included as option.