1. After logging in, select [My Usage] at the lower left of the screen.
2. In the [Payment Information] menu, select the [Register your payment information] button.
3. Enter your payment information, select a payment method, and then enter additional information.
4. Lastly, set values for [Billing Information].
For more information about payment, see the following link.
https://docs.whatap.io/management/billing#register-pay