We have an issue where, when Users attempt to restore purchase, we see empty product ids with transactions of type: SKPaymentTransactionStateRestored.
Our overall logic is to pick the latest transaction sorted by DateTime from the SKPaymentQueue with state ‘SKPaymentTransactionStateRestored’.
We have also observed similar behavior in purchases. Empty product id prevents the apps from provisioning the appropriate subscription, resulting in error. It is hard to figure out what may be going on from available documentation.
