The data couldn't be read because it isn't in the correct format.
I use an app called " Supa Legacy IPTV", and its ran perfectly up until I updated my iPhone 14 ProMax to IOS17. Now every time I try to log in I get this error. The app developers replied that the issue is with IOS17. Can you please tell me what I need to do to get this app working again? My Ipad hasn't been updated yet, and it still runs perfectly, so I don't understand what has changed in the IOS17 update.
iPhone 14 Pro Max, iOS 17