Can't sign out of iCloud
I have been trying for about an hour to sign out of iCloud and I am always prompted with this message: "Cannot Turn Off Find My iPhone. There was a problem deregistering this iPhone with iCloud. Try turning Find My iPhone off again". I try turning off Find my iPhone, but it fails to turn off and still prompts me with the same message. I have tried everything I can, and still I have had no success, including hard resetting my device, going to the iCloud website, etc. Any suggestions? Thanks!
iPhone 5s, iOS 8.3