Cannot Insert Product Category Page

I created a product category, assigned some products to these categories, so the website would be https://site.com/product-category/slug
I want to add the category slug into a page, I cannot. (adding in the browse by specs tab)
Any way to add it? It’s so urgent and important and would solve all my problems.
Thank you

• This topic was modified 5 years, 1 month ago by Raphael Eid.

The page I need help with: [log in to see the link]