iMessage stopped working, says none of my contacts are registered?
My daughter's iMessage just stopped working within the last few days. She has been using it, but now when she tries to contact a friend in her contacts who we know is on iMessage, it shows a red exclamation points after the name and says they are not registered with iMessage. Cannot receive iMessages either. 4th gen ipod 8gb running 6.1.6 (10B500). I've tried turning iMessage on/off, hard reset, and just tried a factory reset, but still all contacts get the red exclamation point. any ideas?
iPod touch, iOS 6.1.6