I am re purchasing the subscription it's giving me this popup "You are currently subscribed" and then in UpdateTransaction observer I am getting, transaction state is Failed. http://prntscr.com/n7tiq1 https://prnt.sc/n7ti45
That is the expected behavior - you can't repurchase a subscription that you already own. You'll get a failure reason of SKErrorCode = 2 which is payment cancelled: https://developer.apple.com/documentation/storekit/skerrorcode
Hopefully Apple can improve this in the future to just automatically restore the subscription or something and send a success response.