Show subcategory first before the product items

Hi,

I used this plugin for product items. I have some categories and sub categories. It works fine but my problem is I want to show subcategory first before product items when collapsing. Here’s the link to product page I made: https://111.221.46.182/~demowebstudio/peakmore/products/

If you go to Metals >> Prime >> Ferrous >> Flat, it shows the products first then the subcategories. But I want it to show subcategory first.

Hope someone can help. Thank you!