Hello,

Let me explain it to you. The attribute filters are WooCommerce functionality and it work only for those items to which they are assigned. For example on your website there are many products in each category that have no color and size attribute assigned to it that’s why the attribute filters are not displayed for the categories.

You need to make sure that you have assigned the attributes to each product of the categories or just exclude them from the category. To make them work fine.

This is default WooCommerce functionality.

I hope my explanation is clear enough for you to understand the working.

Best Regards.