My group chats are not showing on the Messages app

Up until today we have been using the same family chat for over 6 years. No one can see my text messages in the chat. I can see theirs.

I can text everyone in the chat individually and they can see it but in the chat I send it and I see it but they don’t.

I already updated software, I toggled on and off iMessage, RCS and mms, restarted phone and reset network connections.

I have an iPhone 14 Pro and never had this issue. Any help?

[Re-Titled by Moderator]

Original Title: My text is not seen in a group chat