Sounds like you need to turn on "Smart application pages". Go to:
Options > Application > Extras & Add-ons > Content > Smart application pages
the notes there explain...
If your application has private sub-forums (or any other private sub-app), you can use this feature to make app pages always display the contents that the user can view. In other words, if a user has access to a private sub-forum, he/she will be able to view the private contents from the top-level app. Other users (without access) will only view the public contents. Note: this feature may slow down your app pages a little bit because the system must generate them from scratch for each user. You will probably not notice any difference if your application is small (e.g., less than 5,000 topics).
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.