Mike Jolley on "[Plugin: WooCommerce] problem with new product categories and add to cart button"

I have a woocommerce site (theme: storefront).

I changed the permalinks from default to http://www.myeshop.gr/%postname%/
and http://www.myeshop.gr/product

Now i want to add more product categories and subcategories but the problem is that in products in new product categories and subcategories doesnt appears the add to cart button.

Also if i change the name of an old product category the link doesnt work.

Please help me...

Thank you!!

https://wordpress.org/plugins/woocommerce/

Do you have an example URL? The one you posted above does not work.