Related products on post single page

Hi Gabriel.

Maybe a silly question, but does the product post type have any taxonomies? And does the current post have any terms in common with another post?

Do you see ‘No related posts found’ if you put this in your theme’s functions.php

// this will display the shortcode even if no results where found
add_filter( 'related_posts_by_taxonomy_shortcode_hide_empty', '__return_false' );