Mobile View of Zuki not working

I just realized that my mobile view on my iPhone of my Zuki theme seems messed up and is not showing properly. My blog is http://www.midnightblueelephant.com – I had a look in old threats and it mentions a mobile setting under appearances – however, I do not have that setting in my backend. Please advise as I think I am losing a lot of readers for not having my proper layout for mobile. Thanks!