PHP >= 7.4
WHMCS >= 8 (Tested on WHMCS 8 only)
Copy all files to the modules/gateways directory.
Client ID: Airwallex Unique Client ID
API Key: Airwallex Client API Key
Webhook Secret Key: Airwallex Webhook Secret Key
Webhook: https://yoursystem.com/modules/gateways/airwallex/callback.php
Subscribe Events: Payment Intent: Succeeded