If you're curious, I found that you can look at the xmlrpc responses and see what it's sending back. Seems like whatever client side code they have is failing to convert those responses into an html table or whatnot.

From what I can tell, it does seem to be doing something ;)

Hey pmx.

We are having some difficulties with the online demo at the moment. We are working on it and it should be up soon! You can download the SDK and play with it, we would be here to support your every step.