Breadcrumbs on posts not displaying the right pathways

Hello,

Thanks for contacting us and sorry for the inconvenience caused.

The breadcrumbs added by our plugin use the primary taxonomy of your posts. They can’t include a link to a custom page that is not directly related to the post. If you want to include the link to a custom page, then you will have to modify and use the following filter for that: https://rankmath.com/kb/filters-hooks-api-developer/#change-remove-breadcrumb-items

Here is how to add a filter to your site: https://rankmath.com/kb/wordpress-hooks-actions-filters/

And here is an example of how to modify the filter to change the breadcrumbs output:

add_filter( 'rank_math/frontend/breadcrumb/items', function( $crumbs, $class ) {
        if(is_product()) {
             $crumbs[1][0] = 'Your custom base';
             $crumbs[1][1] = 'new-url';
             return $crumbs;
        }
	return $crumbs;
}, 10, 2);

Hope that helps. Let us know if you need any other assistance.