Hi Lou,
That's standard, and as intended, for a "Category" application.
You are not meant to have any posts at the top level, just a set of sub-forums (i.e. categories) You need to navigate to them to find a category in which to make a post.
It looks as if you have created too many "Category" applications below the top level.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.