Unable to add custom CSS

In a prior version of Discourse we were able to add in our own custom CSS but since updating to the latest version it appears we’re missing the box/area where you enter the CSS. Any ideas why this might be happening? I’ve included a screen shot of what we’re seeing. We’re still in midst of getting our site setup.

What browser is this?

Browser is Chrome (Mac)

Are you running latest, or beta?

i believe we’re running latest - 1.2.0.beta4

What happens when you refresh the front page ?

Not sure I understand the question. When i refresh our front page (http://discuss.yummly.com/discuss/) i see same content as before the refresh.