For the past two days I've only been able to see the messages I've posted on the RPH Announce chat. Talked to some other people and they're experiencing the same problem. I don't know if this is affecting the whole server or not but from my anecdote a good number of people are experiencing this problem. A fix or a post from someone who knows how to get it back would be awesome.
Edit: As soon as I posted this it went back to normal, although I'll leave the post up in case it happens again.