4th sidebar in hexa theme?

Hey guys and gals,

I’m new to this, I have settle on the hexa theme, which looked great in the preview,
But when I apply it to my site/blog on tensaibatake.wordpress.com,
one of the sidebar icons disappears (the yellow one with a heart at its center)

On the widget page I can add plugins fine, but there is no “add sidebar” option.

Did the theme get updated with one less such button, or am I missing something?

Thanks 🙂