Guide: Invoice to payment on a phone

How a notification becomes a settled invoice.

About 10 minutes.

1. The invoice is raised WHMCS creates the invoice as usual. The app hooks that event and notifies the client, with the amount and due date in the notification body.
2. They tap the notification It opens the invoice directly rather than the home screen, which is the whole point of sending it.
3. They pay Payment hands off to your existing WHMCS payment page, so every gateway you already support keeps working and no card data ever touches this module.
4. Payment received, or not Both outcomes notify. A failed payment that nobody hears about becomes a suspension nobody expected.