I´m having the same problem, on a Java edition Realms server that I own. The problem started when my realm was still running on 1.19
There is no error message when I send messages. I´m the only player on the realm that has this problem as far as I know. I tried using the /say command and other players can´t see that either. I can see other players messages. I tried logging into a random multiplayer server and sent a message and the players there saw my message so the problem seems to relate to the Realms server rather than my user account. I have gone over the privacy settings on my microsoft account and the settings are OK and nothing has been changed there recently..
I´m having the same problem, on a Java edition Realms server that I own. The problem started when my realm was still running on 1.19
There is no error message when I send messages. I´m the only player on the realm that has this problem as far as I know. I tried using the /say command and other players can´t see that either. I can see other players messages.
I tried logging into a random multiplayer server and sent a message and the players there saw my message so the problem seems to relate to the Realms server rather than my user account. I have gone over the privacy settings on my microsoft account and the settings are OK and nothing has been changed there recently..