https://university.vectorworks.net/mod/overview/view.php?id=5538
But it's working today. After I posted I briefly saw a banner about site maintenance, I'm guessing what I was experiencing was related to that.
I have been working through the Core Associate materials over the last few days and really enjoying it. But when I went to login this morning I get this banner. I tried logging in on different browsers and devices with the same results.