in analalytics.php replace

// Prepare the Analytics "Transaction line" string

$transaction_string = '"' . $order_id . '","boxershortz","' . $analytics_total . '","' . $analytics_tax . '","0.00","' . $orders['customers_city'] . '","onbekend","' . $orders['customers_country'] . '"';

with:

// Prepare the Analytics "Transaction line" string

$transaction_string = '"' . $order_id . '"," ' . $analytics_affiliation . '","' . $analytics_total . '","' . $analytics_tax . '","' . $analytics_shipping . '","' . $orders['customers_city'] . '","' . $orders['customers_state'] . '","' . $orders['customers_country'] . '"';

More...