@makroliva It seems like you currently have “Add to Wishlist” button enabled on shop page, but at the same time the theme adds it again on product image
This leads to the double Add to wishlist problem you’re experiencing
My suggestion here is to disable “Show “Add to wishlist” in loop” option in WP Dashboard -> YITH -> Wishlist -> Add to Wishlist Options -> Loop settings
This way you should just see the button that is added by your theme
Then there is a problem with the appearance of the remaining button
In order to solve this, I suggest you to apply the following rules to Additional CSS section of your theme customizer:
ul.products li.product .mkdf-pl-inner .yith-wcwl-add-button i {
display: none;
}
ul.products>.product .mkdf-pl-inner .mkdf-pl-text-inner .yith-wcwl-add-to-wishlist {
position: relative;
top: 0;
left: 0;
}
This is the final result you should get on your theme
@lpestudio Problem on your site seems related to Porto theme; please, check the topic that I pointed out in the answer to your support thread