Products not showing in category listing menu item

-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.5.1
-- PHP version -- : 5.6.20
-- Browser(s) name and version -- : Firefox 47.0

Hello,
we are using vendor categories for our category organization in something like:
products
- vendor 1
- - category 1
- - - subcategory 1 (with products)
- - - subcategory 2 (with products)
- - category 2
- vendor 2
etc

I am trying to set up a menu item that will display the categories of vendor 1. From there, subcategories should also be displayed when one clicks on a parent category (ie category 1) and finally products should be displayed when one clicks on a subcategory that actually has products (ie subcategory 1)

On the Category Listing menu item the Main category selected is [vendor 1]. Subcategories and child subcategories are displayed properly.

However when one clicks on a subcategory that actually has products nothing happens, no products are displayed and the page only refreshes to the same content but with the new url. (from index.php/menu2 to index.php/menu2/category/subcategory1)

I have been trying to get this to work for hours now. I am obviously missing something, as it cannot be that difficult.

Thank you in advance,
Stelios

Thank you for the immediate reply. I did just that, I posted the question anew to the HikaShop forum

hikashop.com/forum/product-category-disp...enu-item.html#244932

For content sake, feel free to delete this post, so as to avoid confusion.