How to change custom post type url to avoid 404 errors?

Question

WordPress

Using the Types plugin, we created a directory (product/%category%/%postname%/)
After that, the product is now unnecessary and the product was cut out, in the "usual" way

function gp_remove_cpt_slug( $post_link, $post, $leavename ) {
    if ( 'product' != $post->post_type || 'publish' != $post->post_status ) {
        return $post_link;
    }
    $post_link = str_replace( '/' . $post->post_type . '/', '/', $post_link );
    return $post_link;
}
add_filter( 'post_type_link', 'gp_remove_cpt_slug', 10, 3 );
function gp_parse_request_trick( $query ) {
    if ( ! $query->is_main_query() )
        return;
 

    if ( 2 != count( $query->query ) || ! isset( $query->query['page'] ) ) {
        return;
    }
    if ( ! empty( $query->query['name'] ) ) {
        $query->set( 'post_type', array( 'post', 'page', 'product' ) );
    }
}
add_action( 'pre_get_posts', 'gp_parse_request_trick' );

but the situation is a bit "unusual" there is /%category%/ .
Everything is fine when going to /%category%/, but /%category%/%postname%/ gets 404 error.
How to fix it?

Answer 1

In general, the issue was resolved. If I understand correctly, the wp-types plugin has been updated and now it is possible to edit the url.
Also worth the plugin Custom Post Type Permalinks