1. Product Summary UI is not visible in payment page
Check if “product_summary” parameter is passed in the payload to open the Hypercheckout Payment Page and ensure you are testing in CUG if the feature is enabled for the first time.
2. How do I change the UI of the Product Summay
The UI is displayed based on the value passed in the payload while opening the payment page, you can use our Product Summary payload generator to design the UI as per your requirement