I'm getting same error on one number only. But I can text her in a group text just fine. Just not her number directly. And she can text me.
I've updated my profile as another person suggested. I've deleted the texts and tried to start a new text with no luck. It's a coworker and imperative that i can text her. It just happened out of the blue 2 days ago.
I started getting this error 104 2 days ago for ONE person. She can text me but I can't text her. BUT if she's in a group text it will send.
I have updated profile. Restarted phone. Deleted text and started new one. Nothing!