Products filter module: no categories are visible?

Hi,

A question about the products filter module: I can't see a list of categories. I have one parent categorie named 'products' with some sub-categories. When I make a menu button to show the categories, I don't see a list of all the categories. Also, when clicking to view a product, there's no list of categories, it will mention the active categorie, when I click it II would expect to go back to an overview of all the products in this categorie (as the arrow suggests). But instead i get a 'no products found'.

What am I missing here?

Thanks. Niqui