Hello.
In Layout settings I made everything like on your demo.
I test website in Chrome (my friend computer) and it not looks like on my Chrome. Right sidebar doesn't showing.
Also, on Ipad right sidebar doesn't exist.
What's happend? It should be responsive template, yes?
Maybe is important to say that on every page I have left sidebar, center (with item) and right sidebar. Only on frontpage I have + inset position Highlighter I and II.