iPad 3 iMessenger. Every contact it says "not registered". confused. please help.
Each time I try to send a message to a contact with an iPad, iMessenger tells me that it is not "registered". Does this mean that I have an incorrect email address please? I enter the contact, proceed to type a message and the "send button" fades. When I go back to the contact address, it produces a red exclamation mark with the "not registered" message. I would value some help please. thanks. I have updated to the latest iOS.
iPad (3rd gen) Wi-Fi, iOS 6.0.1