First of all, thank you for using wpForo.

Any recommendations how to lock this down fully?  

All recommendations can be found under the private forum tag.

https://wpforo.com/community/?wpfin=tag&wpfs=private%20forum

 For some reason, the stat info can still be seen by random visitors (guest) at the front end to visit the page.  I cleared the cache under Forums > Dashboard > Delete All Caches

If you use some other cache plugins please delete those plugins caches ass well. Also please don't forget to press CTRL+F5 (twice) on forum frontend forum before checking. 

Any recommendations how to lock this down fully?  Specifically, for now, I don't want them seeing this at the front end, as a person can see on this page here (attached)

Under Forums > Usergroups > Guest (edit) I have unchecked every single item available there (nothing is checked).  In an attempt to do this generally, I have gone into Forums > Settings > Features and disabled "Show Forum Statistic" (NO) entirely. For some reason, the stat info can still be seen by random visitors (guest) at the front end to visit the page.  I cleared the cache under Forums > Dashboard > Delete All Caches

Thoughts, help?  This is my first post here, and this is also my first ever experience creating a forum of my own on my own website, so just keep that in mind. Thanks!