cannot signup for trial

 I'm trying to signup for a trial (https://freshdesk.com/signup). I've filled in all the fields. On click "Sign up for free" nothing happens, I stay on the same page, no page loading indication, no indication of erroneous fields (phone and email are valid). I tried this with FireFox and Chrome on Windows 10. Also, clicking on  "Ask Frank" chat drops down the chat pane but I cannot type in anything!