Add referrer URL to placed orders

Hi, we need to add referrer url to all orders placed on a woocommerce wordpress website. I've tried a few methods including the woocommerce booster plugin user tracking module but none are working.

So when a customer clicks a link on a partner referrer website to our site, once they purchase, the original referrer (the last site they were on before they arrived on our site) is shown on the orders in the admin area. Ideally, also on the new order notification email.

This is urgent, we need to done within a day. if possible.

Thanks.