We are experiencing that the download and installation does not finish on TestFlight when running an active packet tunnel. Only after disabling the VPN and pausing/resuming the download on the home screen, the upgrade succeeds on iOS13Could a similar scenario also happen when upgrading live apps from the app store, given that they are running a packet tunnel? Or are these fundamentally different processes?Or just the bug of TestFlight ?

Our apps contain In-App Purchases. We are using server-side validation to validate purchase receipts for non-renewing subscriptions and client validation for auto-renewable subscription. The problem is that when we do the non-renewing subscription receipt validation the apple server need us to upload the shared secret key otherwise it will return 21003 error. Can I avoid to upload the shared secret key?(since our server api can not do that)