Graeme,
I took a look with a subscriber user account, and verified that your Community settings were set correctly, but the admin bar was still displaying. I did notice that you have quite a few plugins installed. Could you try deactivating all other plugins to see if there’s a conflict, or if one of them is overriding the Community settings?
If that doesn’t change anything, it’s possible your theme could be manually adding the admin bar also. If that’s the case, then give this tutorial a try to see if it removes the admin bar for non-admins: http://www.wpbeginner.com/wp-tutorials/how-to-disable-wordpress-admin-bar-for-all-users-except-administrators/
Just let me know what you discover. Thanks! 🙂
-Casey-