Customers may accidentally overpay for their order, whether due to miner fees being added unnecessarily, accidentially using a different exchange ratthe, or due to errant keystrokes. CryptoWoo lets merchants configure an “Overpayment Buffer” that determines the percentage by which a payment must exceed the order amount before the order is considered an overpayment.
In case of an overpayment the order is automatically completed but flagged as overpaid, which triggers an email to the store owner and the customer. The “Overpayment Message Text” email to the customer can be configured by using placeholders for the different variables. This way, the customer will successfully receive their items without merchant intervention and the merchant can easily find all required information to send the excess amount back to the customer.
If the customer entered a refund address during checkout, the e-mail to the administrator also contains a QR code with a BIP21 compatible URI. This enables merchants to automatically pre-fill the wallet client with the details for the refund transaction by scanning the QR code or clicking the link in the same way as the customer does it on the payment page.