WooCommerce Flutter REST API Integration + Issues

Hello, I have a Fluxtore app integrated with my WooCommerce site ([login to view URL]) I have few changes to be made to the app: - Address should map website fields - address not saving. The checkout fields on the app are different from the website and hence they don't show in WooCommerce orders when an order is placed. - Payment gateway process needs to be refined: Currently, if you place an order you will see a glimpse of the checkout page from the website and then after few seconds it will move to the payment page. I want to hide that checkout page. - If I place an order with cash on delivery the address will show in WooCommerce orders but not when selecting other payment methods. - Show TeraWallet info: I have TeraWallet plugin implemented on the website and I want to display the credit info, credit history, credit top-up on the website. They have REST API documentation available. - Add Delivery/Time slot: I use Tyche Order Delivery Date plugin and I have to display the delivery date and time slot plugin. (It shows on the website checkout page but not in-app) ------------ Link to test the app (APK) will be provided upon request. Thank you!