We have setup Apple’s Server notifications for auto-renewable subscriptions. Last month we still able to get all notification type(INITIAL_BUY, RENEWAL, INTERACTIVE_RENEWAL).
Recently when we tested with sandbox (1 year subscription), we receive only 'INITIAL_BUY' server notifications, we were expect to receive 'RENEWAL' server notifications after 1 hour, but we are not getting those notifications.
Question:
I just want to confirm that is it a new notifications service that only send us 'INITIAL_BUY' notifications? And there are no server-to server notification if the renewal is successful?
Note:**
We did validate receipt with verifyReceipt server to check latest_receipt_info.