When IAP is purchased the following is correctly displayed.
“You’re all set Your purchase was successful.”
However, when a previous IAP is restored, purchase will be restored but there is no feedback/notification displayed. Therefore, after an IAP is successfully restored, the following feedback/notification would be very helpful (similar to when the app is purchased):
“You’re all set Your purchase has been successfully restored”
I understand this is not related to coding by the developer but has to do with the apples in-app purchase process.