问题
We have an app with In-App Purchases, which is working fine on iOS 7. But on iOS 8, when a user tries to purchase anything in the app, In-App Purchase fails with the error “The Apple ID you entered couldn't be found or your password was incorrect. Please try again”, even though the ID / password are (we believe) correct.
This happened on any iOS 8 device we tested on (with six different models of iPhones and iPod Touches), and happens on 8.0, 8.0.1, and 8.0.2. We tried this with many different Apple IDs, and it happens regardless of whether TouchID or password is used for authentication.
The purchases work fine in the live version on iOS 7 as well as in the Ad Hoc builds on iOS 8. Only the live version on iOS 8 has this problem. Restoring purchases in the live version also works fine on all devices.
Has anyone bumped into this, can think of what could be the problem?
来源：https://stackoverflow.com/questions/26057906/in-app-purchase-fails-on-ios-8-saying-user-details-are-incorrect