Sign in to your backoffice at https://www.enagicwebsystem.com/backoffice.php
On the left side Menu click on Settings > Billing / Account > Make Payment.
Select a payment option.
Confirm that the payment method is still valid and click on Proceed.
Your payment will be processed and confirmed and you will be able to access your payment records from the Manage Account section of your EWS backoffice.