Additional details: I did not enable a grace period in ASC. For the callbacks where notificationType = DID_FAIL_TO_RENEW, the subtype is empty, and the renewalInfo.expirationIntent is 2. According to the documentation (https://developer.apple.com/documentation/appstoreservernotifications/expirationintent), value 2 indicates a billing error. After 7 days free trial, about 45% of my auto-renewable users remained, but almost all of them are showing DID_FAIL_TO_RENEW. I’m very confused — why would all the remaining users who still have auto-renew turned on be flagged as billing issues? Is this a bug or expected behavior?

I have also submitted a report through Feedback Assistant: FB20103897

FB20103897 selected a wrong categroy, I have resubmitted a report: FB20123714