I installed and activated Envo Shop for my new WordPress website which is hosted on Hostinger. Everything almost is going good except, Categories which are not showing up under Appearance, Menus.
Currently, there are 12 available Categories (including Uncategorized category). All other Categories have at least one product but Uncategorized doesn't include any product!
Now I created new Menu only for available categories, I see nothing except Uncategorized!!!
I also Purged All caches from WordPress itself and from Browser but it still doesn't work.
I have done some researches to find out proper solution for this problem but most of similar problems are related to specific Menu plugins while I use no plugin for Menus. Only Woocommerce

What is the problem? Why there are no categories under my new menu?

I attached two images of current problem down below: