Live support chat is not working on WPMU website

I'm trying to use your live support. When I click on the current live session, it tells me that the session is closed, and does not begin until tomorrow. I've waited two times to join a live session, and it's not letting me in, and it's not because I'm trying to join at the wrong time. At the top of the screen, it gives a countdown until the next session, and when a session is live, you can simply click on the link to join. What's going on?