Welcome to the Community!
Really sorry to hear you're having trouble with Sky Cinema.
I've located your account, removed the phone as a device and added another device change for you. I'd like you to uninstall/reinstall the app from your phone then try re-registering it as a device.
Tech fan? Have you read our Digital life blog yet? Check it out
Sorry to hear you're still having trouble.
I've added another device change for you. Can you try re-registering for me?