It is tied to your chrome login. Change profiles and it will work. I don't know why - but switching to a guest or different chrome profile fixed the issue. Well, it is still broken on my main chrome profile... and I tried deleting a bunch of stuff (saved passwords and what not), but it is still messed up - just a blank page. I did a chat with Hyatt and pointed them to this thread (as proof that others had the issue - all three of us ). They said they would report it.

edit: something on my Google Chrome profile is causing the site to detect it as a bot (as pointed out above) with a 429 error hidden.