It worked for a while, but started happening again. Not sure if it's a separate issue.
https://developer.apple.com/forums/thread/760548
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@allyLuna Unfortunately I'm not familiar with Objective C but below is the Swift equivalent. Have you tried leaving options empty or nil?
let receiptData = try? Data(contentsOf: receiptUrl).base64EncodedString()
@hsc101 no worries - glad it helped! :)
@allyLuna ah yes that would be the reason! StoreKit configuration is only for testing in the local environment, so you will need to use sandbox
While on this topic, will it become available in production this fall?
@ziggmike Does changing the prefix not reset the data for existing apps though?