Hello,I think i got the same issue with my iMessage app extension.When i use the method :SKPaymentQueue.default().restoreCompletedTransactions()to restore transactions i got an error message telling me there is no information about in-app purchases - Sandbox environnement - 21105.This is probably linked with the receipt created by :let _receiptRequest = SKReceiptRefreshRequest() _receiptRequest.start()The SKReceiptRefreshRequest() never works, i can't have a receipt from apple with it.So, when i want to test the in-app purchases in sandbox environnement, i need to purchase one of the in-app purchases of the iMessage Extension. Purchase an in-app is the only way that worked to get a receipt. And if i delete the app and download it again i need to purchase each time one in-app to restore the purchases.I tested this basic method in sandbox environnement in my developpment device and in testflight environnement. Each time same result, to crea