To whom it may concern: wpForo works properly, and displays 404 when I have the permissions applied to restrict "visibility/view" of detailed topics.

I am using Ultimate Member and wpFusion as well.  What I need is:

1) A way to customize the 404 message that is displayed

2) add shortcodes to the 404 display so I can place appropriate messages for "guests not logged in" versus "inactive members that need to renew"

Thoughts?