FOX - Currency Switcher Professional for WooCommerce

Plugin URL: https://yithemes.com/themes/plugins/yith-woocommerce-gift-cards/

• to your current child wp theme file functions.php add next code:

  add_filter('yith_ywgc_set_cart_item_price', function ($amount, $values) {
      if (class_exists('WOOCS')) {
          global $WOOCS;
          $curr = $WOOCS->current_currency;
          if ($curr != $WOOCS->default_currency) {
              $currencies = $WOOCS->get_currencies();
              $amount = $WOOCS->back_convert($amount, $currencies[$curr]['rate']);
          }
      }
      return $amount;
  }, 99, 2);