The payment method https://charlie.example.test/webpay redirects to
https://david.example.test/webpay, similar to how https://google.com/pay
redirects to https://pay.google.com/about.
The payment method https://charlie.example.test/webpay redirects to
https://david.example.test/webpay, similar to how https://google.com/pay
redirects to https://pay.google.com/about.