StoreKit SKPaymentQueue restoreCompletedTransactions always failed in Sandbox

I'm implementing iap using StoreKit. Everything is ok, but restore all transactions.

What console log when failed to restore is shown as:

Error Domain=SKErrorDomain Code=0 "An unknown error occurred" UserInfo={NSLocalizedDescription=An unknown error occurred, NSUnderlyingError=0x281308690 {Error Domain=ASDServerErrorDomain Code=5002 "An unknown error has occurred." UserInfo={NSLocalizedFailureReason=An unknown error has occurred.}}}

I have tried log out and switch other sandbox account, reboot the device. It doesn't work. Any one help?

Thank you for posting, could you please file a ticket in Feedback Assistant and post the FB number here? Include your user's info, approximate time of request, and a sysdiagnose if you have one please.

StoreKit SKPaymentQueue restoreCompletedTransactions always failed in Sandbox
 
 
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