Hi, I'm implementing an auto renew subscription in my app. I tried to figure out how to validate and get notified about any changes in users subscription status, and I found so much ways to do it.
What is the difference between those:
a. /validateReceipt
b. appstore API (for example inApps/v1/history/{originalTransactionId})
c. apple notifications service, with the webhook url in the appstore connect information.
Do I need to use all of the above methods in order to make my auto renew subscriptions 100% hermetic?