Apple rejected the iOS app based on In-App Purchase problems with this message: “We discovered one or more bugs in your app. Specifically, we notice an error message upon attempting to make in app purchase. // Please run your app on a device to reproduce the issues, then revise and submit your app for review.” // Screenshot in Resolution Center shows “The purchase identifier was invalid”

Also check out this article. Then, please re-check if the In-App Purchase is working on your testing environment using a fresh (!) Sandbox account. Old, already existing Sandbox accounts can lead to problems. How to create a fresh Sandbox account:

 

– Sign in to App Store Connect at https://appstoreconnect.apple.com

 

– Click the ”Users and Access” section icon.

 

– In ”Sandbox”, click ”Testers”.

 

– Click “+” to set up your sandbox account.

 

– Complete the sandbox account information form and click ”Invite”.

 

If it does work using the fresh Sandbox account, please reply this kind of message to the Apple review team within the Resolution Center of your app (link can be found in the rejection mail of Apple):

 

Thanks for your mail. As you can see in the attached video, it’s working for me. Please re-check, and, if possible please try this Sandbox Apple ID account:

Sandbox Apple ID Account:

 

E-Mail: *** insert e-mail address of the fresh Apple Sandbox ID (see above) ***


 

Password: *** insert password of the fresh Apple Sandbox ID (see above) ***


 

Thanks for re-checking and have a great day!

 

Don’t forget to create & attach a video containing the successful In-App Purchase procedure using your fresh Apple Sandbox ID.