My app is being wound down and I'd like to provide a way for people who have purchased the lifetime subscription to get a pro-rated refund. But it seems like older IAPs don't show up on https://reportaproblem.apple.com/ and the in-app refund sheet throws an error when trying to process these refunds ("Your request could not be submitted").
In the in-app refund sheet: Am I doing sth wrong or is this expected behavior?
Is there any way I can get a refund for these people? What's the specific cutoff for refunds?