I am using the plugin "Wordpress w3all phpBB Integration" to automatically log the user in to phpBB when the user logs in to my website. If I used the standard login (user id + password), all is well. However, when using the Facebook login through the Social Login plugin, the screen saying that I'm being logged in appears, but I'm not actually logged in to my Wordpress powered website, I'm simply asked to log in again. If I disable the WordPress w3all phpBB integration plugin, Social Login works fine, but of course there's no coordination with phpBB.
I've asked this same question on the WordPress w3all phpBB integration support forum, but have not gotten a solution there yet, so I'm asking for help here as well.