From Apple 3. 1.1 BUSINESS: PAYMENTS - IN-APP PURCHASE
Your app uses intermediary currency to purchase items that function as non-consumable products but does not include a restore mechanism.
Users restore transactions to maintain access to content that they've already purchased.
Next Steps
Please modify your app to include an optional user registration feature that allows users to restore their purchases to all of their iOS devices.
We recommend indicating that account registration is...
iOS app rejected...looks like something new
Your app uses intermediary currency to purchase items that function as non-consumable products but does not include a restore mechanism.
Users restore transactions to maintain access to content that they've already purchased.
Next Steps
Please modify your app to include an optional user registration feature that allows users to restore their purchases to all of their iOS devices.
We recommend indicating that account registration is...
iOS app rejected...looks like something new