Hi
The problem comes from your settings for the Layout of template. You set ja_stark - Default (2) template style as default style of your site but you use home layout for it. This layout doesn't include component main content block of a page so nothing displayed on above page.
I just changed the layout to default and it shows normally now.
You can follow the documentation of JA Stark template again, we instruct in details of how to setup demo pages in which we use 'home' layout for specific page like Homepage only. The default template style will use default layout.