I test IAP in sandbox on IOS.I create a Non-Consumable item.
When I purchase second time.It shows "You've already purchased this but it hasn't been downloaded.Tap OK to download it now."
I think it purchased succes.But How do I save the purchased date,check purchased information and provide the paid game content?
The 'Is product purchased' 'on purchase start' 'on purchase completed' seems not work.
Purchase product with preview seems no response too.(I test use purchase product action,it works,but use Purchase product with preview no response. )