@cdr9042 Works for me! I’m testing with 4.1.3 and using the CrossPlatformValidator without the need for a Try/Catch block. I’m building with IL2CPP and .NET Standard 2.0. Unity version should not matter. I’m using the Sample IAP Project v3, remember to generate your own tangle files first which the validator requires (menu Services/In-App Purchasing/Receipt Validation Obfuscator…) Sample IAP Project I would recommend that you get the Sample project with no changes except for package name and projectID and publish it to TestFlight. Ensure you don’t add any additional libraries during your test like the Facebook SDK or Firebase, or any other components.