Hey there, sorry to hear your IAP confirmation popups stopped working out of the blue—this can be super frustrating, but let’s walk through targeted checks and fixes to get this sorted:

• Verify In-App Purchase Status in App Store Connect
  Log into your Apple Developer account, navigate to your app > Features > In-App Purchases. Double-check that every product you’re trying to sell is in the Approved state. Sometimes items can revert to "Waiting for Review" or get flagged after updates, which blocks the purchase flow entirely.

• Check Test Account & Device Restrictions

  • Make sure you’re using a Sandbox Apple ID for testing—production accounts won’t trigger test purchase popups, and sandbox accounts can sometimes get disabled if misused.
  • On your test device, go to Settings > Screen Time > Content & Privacy Restrictions > iTunes Store & App Store Purchases and confirm "In-App Purchases" is set to Allow.

• Debug Your StoreKit Implementation

  • Inspect your code to ensure SKPaymentQueue.default().add(payment) is actually being called when the purchase button is tapped—accidental condition checks or commented code can easily block this critical step.
  • Confirm your SKPaymentTransactionObserver is properly added to the payment queue (e.g., in your app’s launch code or purchase flow initializer) and isn’t removed prematurely.
  • Connect your device to Xcode, filter the console for StoreKit logs, and look for errors like Invalid product identifier (a common issue if your product ID doesn’t match what’s in App Store Connect) or permission-related warnings. These logs will often point directly to the root cause.

• Rule Out Server/Caching Issues

  • Restart your test device—local StoreKit cache can sometimes get corrupted, and a simple reboot will refresh this data.
  • Switch between Wi-Fi and cellular data to eliminate network connectivity problems blocking the purchase request.
  • Check Apple’s System Status page to confirm the StoreKit service is operational (outages are rare but can happen unexpectedly).

• Match App Versions & Review Status

  • Ensure the test build you’re using is linked to the same app version you uploaded to App Store Connect 3 months ago—old builds might not have the latest IAP associations.
  • If you’ve submitted a recent app update, check its review status; sometimes IAP functionality is temporarily restricted during the review process.

If none of these steps resolve the issue, reach out to Apple Developer Support with your app ID, specific product IDs, and relevant console logs—they can dig deeper into account-level or server-side problems that aren’t visible from your end.

内容的提问来源于stack exchange，提问作者Aashish Kumar