ChatCode applied after the fact
CODE was valid when you placed order.name, so the discount still applies. Our team will refund the amount difference to your original payment method once they approve it.
Not to the order itself in most stores. Instead, the store refunds the difference the code would have taken off.
Most stores do when the code was valid at the time and the order qualified. A limit, such as within 7 days of ordering, keeps it fair.
Explain the end date kindly. If it ended within a day or so, some stores make an exception, so write that into the procedure and it is applied evenly.
Aide fills in the Shopify order and tracking, then drafts or sends the reply, as you choose.