show attributes at compare page woocommerce

I have a woocommerce shop. I want to have a compare page and all the attributes of each products to be shown. there is a shortcode of [irk-compare-table] that should put in the page I want to show compare list. everything is ok but there only shows some of the attributes and not all the attributes of each product. how can I show other attributes. I even used woocommerce compare plugin, It shows the attributes title but no values within it. how I can have other attributes on the compare page? there is a function irk_get_compare_list(), maybe I can use from that. the question is how can show all the attributes in compare page and why not all attributes are shown?