We have the same issue. Yesterday our testers found out they can't buy the same in-app second time with message "This In-App purchase has already been bought. It will be restored for free." There was no changes in payment code in our application. We are using Unity Purchasing library version 2.2.7 from January. I tried TestFligh, development build and ad-hoc build which all uses sandbox payments and the bug is everywhere. We have version of our app currently in production that has no issue but are afraid of release next version from TestFlight. We need confirmation from Apple that payments will be ok in production. Thank you