FOX - WooCommerce Currency Switcher Professional

Plugin link: https://wordpress.org/plugins/woo-product-bundle/

• into file functions.php of the current WordPress theme add next code

  add_filter('woosb_item_price_before_set', function ($_price, $cart_item) {
      if (class_exists('WOOCS')) {
          global $WOOCS;
          if ($WOOCS->is_multiple_allowed AND $_price) {
              $currrent = $WOOCS->current_currency;
              if ($currrent != $WOOCS->default_currency) {
                  $currencies = $WOOCS->get_currencies();
                  $rate = $currencies[$currrent]['rate'];
                  $_price = $_price / $rate;
              }
          }
      }
  
      return $_price;
  }, 10, 2);