Need to add "WISHLIST" button on affiliate store working through Datafeedr

Hi !
I need to add “ADD TO WISHLIST” button in my affiliate store.[just like this affiliate store have http://www.pronto.com/product/installation-kit-big-block-ez-p_2434964988?pageLocation=featuredProductTitle] and I know that to make this functionality it must fetch the product ID from the datafeedr to the WordPress database to make it work. And I’m stuck here. 🙁

Thanks.

https://wordpress.org/plugins/datafeedr-api/