It seems to be down right now. It grew 50% from yesterday to today, so... well, growing pains.
edit: it's back up.
It's tough to read as a lurker. The page keeps scrolling around and re-rendering. I think the "realtime" promise is pretty misguided.
It’s known and this “feature” will be removed in an update.
What browser/OS? Maybe try a different combination.
I am using Google Chrome on Mac, and it literally crashes when I click on the submit button, so I assumed the server crashes. Tried about 5 times across multiple days, and I have never been able to sign up.