Page Indexing Issue

Hello @krishkerckhoffs,

Thank you for contacting Rank Math support.

1. Even if you block the URLs using the robots.txt file, Google can still index them. You haven’t shared the URLs that are under the “Indexed though blocked by robots.txt” status. Please share some URLs so we can suggest a filter to set them to noindex.
2. The URLs under the “Excluded by Noindex tag” status are the product tag URLs. Since you have set them to noindex, you can ignore them. Google must be discovering them from the internal links but won’t index them as they are set to noindex.
3. The rule to block add_to_cart pages in your robots.txt file needs to be modified. You should use Disallow: /*?add-to-cart=* instead of Disallow: /*?add-to-cart=.

Looking forward to helping you. 

Hello @krishkerckhoffs,

From the URLs you shared, those are your add-to-cart and add-to-wishlist links.

In this case, you can use this filter to set them to noindex:

add_filter( 'rank_math/frontend/robots', function( $robots ) {
$url = home_url( $_SERVER['REQUEST_URI'] );
if( (strpos($url,'?add_to_cart=') !== false || strpos($url,'?add_to_wishlist=')) {
$robots['index'] = 'noindex';
$robots['follow'] = 'nofollow';
}
return $robots;
});

Here’s a guide you can follow to apply that:
https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps.