On Thelanis...
Party chat has been completely broken for me since last week's maintenance work, before that it seemed to be working for me sometimes and not others. Up until about a month ago it seems, I never had any issues with it.
The issues appeared to start with the extended server maintenance work, but I can't remember which extended maintenance it started breaking on. At first it would randomly not work, now it never works.
By "completely broken," I mean I can't see other's chat in party, and they can't see mine. Tells work just fine.
Here is what I've experienced and seen:
After logging into Thelanis, I see my buffs load up on screen, and then I see a message that appears at the top center of the screen that reads: "The chat server is temporarily unavailable. Try again shortly."
I try re-logging it doesn't help. I play 2-3 hours a night and the chat server never comes online for me.
I PUG high reaper regularly with full parties. Chat is usually only working for about half the party. Makes high reaper runs a bit more interesting (LOL).
At the suggestion of a few other players, I also tried changing UserSpecifiedPort=0 to UserSpecifiedPort = 9000 in my UserPreferences.ini file and that didn't work (they mentioned something about valid ranges falling between 9000-9010).
Hope this helps, and good luck resolving.