If you've accepted the new java update you are pretty much done.
The people that run the room have stopped supporting new updates, and that means slowly as they roll out the room becomes less and less functional for more and more people. There is no fix, or solution.
The room replacement they promised seems to have been indefinitely delayed.
We are shopping for a new chat room, but there is a total lack of decent options that approach anything with a reasonable price tag.
So we slog on with the semi-working thing we have, and apologize for it's poor quality. You can take solace in that you have not overpaid to use it though.
Myriads