BuddyPress.org

@pmuktan Nearly all WordPress themes are compatible with BuddyPress. You just need to activate BuddyPress, then configure the BP Components/Pages/Settings. We don’t have access to the premium themes, but if Themeshift has the_title and the_content within the WP loop in its page.php file, then you should be good to go.

@pmuktan for importing your Mingle Forums to bbPress Forums (which BuddyPress uses), check out how to do so at https://codex.bbpress.org/import-forums/mingle/

You’d find support for Mingle importer at https://bbpress.org/forums/
Log in using WP username and password. Good luck.