iMessage group freezes, can't send messages

[Legion103]

Anyone have any idea a fix for this? Every single iMessage group I am in works, yet one of them randomly stopped working today.

I can send messages from my iMac to the group, but on my iPhone -- won't let me or anyone else in the iMessage group open it.

3 users -- all iPhone users.

Any ideas?

 

[now i see it]

Only possible fixes would be to reboot the iPhone. And a more drastic action that probably wouldn’t help at all is reset network settings.