Has your app been reviewed? Can we even test these things on TestFlight if our app has not passed the review? Testing In-App Purchases in the sandbox environment doesn’t require uploading your app binary to App Store Connect. TestFlight uses the sandbox environment for in-app purchases. For more information about testing in-app purchases In the sandbox, see Testing In-App Purchases with sandbox. Now when I want to cancel my subscription from the Apple Settings it gives me the following error after confirming cancellation, 'Your request is temporarily unable to be processed. Please try again later.' People can upgrade, downgrade, or cancel their subscription by choosing Settings > Apple ID > Subscriptions on an iOS or iPadOS device. TestFlight doesn’t support this page. To cancel a subscription in TestFlight, present the Manage Subscriptions page within your app. For more