I’m not familiar with that theme, but clearly it contains a bit of custom BP magic beyond just providing a content area. Depending on how the theme has been coded (and crossing your fingers that the theme has well-documented inline comments to explain what each function does) I would take a look in the functions.php file of that theme and see if you can find something with if ( is_user_logged_in() or if ( current_user_can('read') ) to see if they are trying to identify logged in and logged out users.
