Open COD Form → Settings and find Redirect after purchase. The prompt reads "After customers complete their purchase on the COD form" and offers four answers. Whichever you pick, the order is already created by the time this happens.
Redirect to the default Shopify thank you page is the default and the safest choice. The customer lands on the same order status page as any other Shopify order, which is familiar and carries their order number.
Redirect to a custom page or link opens Custom page URL. Give it a full address. A value without http or https gets https:// put in front of it, so a path such as /pages/thank-you becomes a broken link. Fill the field in: if you leave it empty the customer goes to the ordinary success message instead.
Redirect to a WhatsApp chat with you takes Your WhatsApp phone number with the country code and no spaces, plus an optional Pre-filled WhatsApp message. WhatsApp opens in a new tab and the customer stays where they are, then sees the ordinary success message. The only check on the number is that it holds ten digits or more, so a national number passes and quietly builds a chat link that leads nowhere. Write it in full international form.
Show a custom thank you message inside the form keeps the customer where they are and shows your Thank you message. Underneath the box there is a list of shortcodes you can click to insert: Order ID, Order number, First name, Last name, Phone, Email, Address line 1, Order total, Products with quantities and Products with quantities and images. Each one is replaced with real order data on the storefront.
Save, then place a test order and follow the whole path. While the order is being created the customer sees a short processing message.
Shopify still sends its own order confirmation email, whichever option you choose here, as long as the customer gave an address the app accepts as a valid email.
Using the in-form message? Read it back after a test order to check that every shortcode was replaced.
Stuck on any of this? Open the chat in the bottom right corner of the app and we will help you set it up.