Archive product

<?php

// Place products in stock first
add_filter('woocommerce_get_catalog_ordering_args', function ($args) {
  $args['orderby']  = 'meta_value';
  $args['order']    = 'ASC';
  $args['meta_key'] = '_stock_status';
  return $args;
}, 9999);

// Add HTML to prdctfltr title
add_filter('prdctfltr_filter_title_args', function ($args) {
  if (XforWC_Product_Filters_Frontend::$filter['title'] === 'Maat') {
    $args['after'] = '<span class="prdctfltr_extra-label">'.__('Tip! Kies eerst', 'suiteseven').'</span>';
  }
  return $args;
});