Haha, yeah it's a one-page app. And truthfully, we regret splitting up the front-end/backend-API in the day 0 of development. It slowed our dev pace down. Lesson for startups, start with a monolithic app, split it later.
I had to whitelist your domain in NoScript. And also Cloudflare.com... Why are you using your competitors CDN service to serve some javascript on your site? All I saw was a blank page without the assets served from cloudflare's CDN. What kind of CDN are you?
I guess the correct answer is "one that doesn't dogfeeds itself"...
Or keep the same split but render it all server-side (easy with ASP.NET, no idea with other languages).