My game is rejected with this error anyone knows how to solve this? Guideline 2.1 - Performance - App Completeness We found that your in-app purchase products exhibited one or more bugs when reviewed on iPhone and iPad running iOS 12.1.4 on Wi-Fi. Specifically, an error message was displayed when we attempted to purchase the in-app purchase product. Next Steps When validating receipts on your server, your server needs to be able to handle a production-signed app getting its receipts from Apple’s test environment. The recommended approach is for your production server to always validate receipts against the production App Store first. If validation fails with the error code "Sandbox receipt used in production," you should validate against the test environment instead.