Hi the point is that your template is behaving incorrectly. It is displaying a filter on a page that should not be displaying a filter when the “subcategories” option is selected.
The importance here is that the code needs to be fixed so that when display “subcategories only” is selected, it does not bring up the irrelevant filter.
As you can see from the links I provided on the page there are no products displayed for the filter to appear.