Jen,
I see the OG tag in the page pointing at the AdAgency image. Looking at the HTML on the page, that image is the first image inside your articles contents, which is why JFBConnect is pulling it. How is that image being inserted there? Is that through an AdAgency Content plugin or some other method? If it's from a content plugin, please make sure that the JFBConnect Content plugin is ordered above (before, lower number) it.
Ultimately, you want JFBConnect's plugin to scan the article for the first image -before- AdAgency adds its image to it.
If you aren't using a Content plugin for AdAgency, again, let us know how that ad is being inserted, and we'll do what we can to help figure out a solution. Unfortunately, if it's not a content plugin, the ultimate solution may still be that you have to manually add the {JFBCGraph image=xxx} tag to the article.
Thanks, and keep us posted,
Alex