There are two kinds of breadcrumbs in our theme: one comes from WooCommerce plugin and one from WoodMart. If you want to customize our theme’s one, you need to edit the file inc/template-tags.php.
As for the WooCommerce, you can try the solution from this article https://kb.yoast.com/kb/add-theme-support-for-yoast-seo-breadcrumbs/