[Solved] Woocommerce category description as subtitle

There is an extra hook you can use for this woocommerce_archive_description, hook into it like this:

    add_action( 'woocommerce_archive_description', 'wc_category_description' );
    function wc_category_description() {
        if ( is_product_category() ) {
            global $wp_query;
            $cat_id = $wp_query->get_queried_object_id();
            $cat_desc = term_description( $cat_id, 'product_cat' );
            $subtit="<span class="subtitle">".$cat_desc.'</span>';
            echo $subtit;
        }
    }