My customer had bought an Opencart website and an eCommerce Flutter app (from inspireUI/Fluxstore). And my job is to implement the payment part into the app, (the app now loads the payment page from the website into a WebView and sync all the data the user had entered).
The user has to complete the web form, adding his credit card and complete the payment process.
Anyone have some documentations or any previous experience to help? I've searched and contacted inspireUI support team and did not find helpful information.