Hi, it sounds like the webpart is working as it should do.
The webpart will only ever show details for the specific site it is placed in, not all sites in that site collection.
If you place the website in the sub-sites too, it will show the site listing details for that sub-site.
The 'include sub-sites' check box means that the scan job will add listing for every sub-site as well as the site collection root, but this does not affect the behaviour of the webpart.
Good point regarding screen shots. Please can you add this as an Issue Tracker list so that we pick it up when we do the next version.