Firebase: Ember application cannot access pages other than the index

I have a very simple application with 3 routes.

This is the welcome page

It's URL is

http://ift.tt/2q3RAwp

This is the blog page

It's URL is

http://ift.tt/2q3RAwp

Lastly I have a login page (not shown), and an index (which only redirects to \welcome).

So here's the problem: If I go to

http://ift.tt/2q3KhEL

Then it will redirect to the welcome page as expected. Furthermore, it displays http://ift.tt/2q3RAwp in my browser URL. However, if I go to

http://ift.tt/2q3RAwp

It does NOT go to the webpage. Instead it returns:

What this means is that I can't access individual routes/pages in my application. In order to get to /login, /welcome, or /posts, I have to get there from the index.

Why is firebase behaving this way? How can I access urls without going to the index first?