Turn it on
Go to WooCommerce → Powerups and switch on Payment link helper. Open any order: the Payment link section appears in the Customer pages box in the sidebar.The Customer pages box holds both the payment link and the thank-you page preview. It only shows when one of them is on.
The Customer pages box on an unpaid order, with the Payment link section
Use it
For unpaid orders you get three buttons:- Copy copies the link. The button turns into a tick.
- Open opens the payment page in a new tab.
- Email asks you to confirm (“Send the payment link to …?”), then sends WooCommerce’s “Order details” email, which includes the link. The order needs a billing email.