Ah, sorry about that. I agree there should at least be an error message.
We originally built this as a page on openlistings.co (/fixers), but then found this awesome domain. The assets are all the same from openlistings.co, we're just checking the current domain in our Backbone.js router. Kind of hacky, but it was the quickest way to get it up! Also, if you click any of the detail pages you need the rest of the assets anyway because it takes you back to openlistings.co. Long story short, it's pulling in assets and doing API calls to openlistings.co.
Considering that hosting javascript (and fonts and files) externally leaks information about your visitors to third partys hopefully some developers will care about their users' privacy and not do that.
I expect some sites not to work fully, but completely blank is unexpected.