Using Mashshare Plugin with Confrit Theme?

I just installed the Mashshare Plugin on my WP site that uses the Confrit theme. I love the theme, but have been having difficulty finding a suitable ‘subscribe’ button. Mashshare looks great and I’ve got it to appear on my site, but for some reason I’m having difficulty getting it to show up in the sidebar – versus just on the posts/pages. Is there a simple way to do this?

Also, when the subscribe button (that is found on the post/page) is pressed – I don’t get a pop up window, but instead am redirected to an “Oops! can’t seem to find that page”. Am I missing something here?

Any help would be most appreciated.