imessage stopped working.
my imessage all of a sudden stopped working while I was messaging people. It says that all of a sudden their email they use is not activated with imessage. And when I tried to send a message to myself it said mine wasn't either. But when I got to settings it says it is, so I reactivated it and it still won't send messages. I have three emails open for my imessage. And none of them worked. This is occuring on my iMac and iPad as well. Any thoughts please?
iOS 6