The {SCOpenGraph title=xyz} tag is something you can add to a page itself. That's a way to specifically set the title, image, description or any other Open Graph tags for a page instead of letting JFBConnect automatically generate it.
So, if you want the page's title to be "My Great Website", on the page, you'd add the following tag:
{SCOpenGraph title=My Great Website}
You can put that in the article text, in a custom HTML module that shows on the page, or anywhere else that will be displayed on the page. JFBConnect will see that tag and replace it with the correct Open Graph tag.
You can do the same for an image:
{SCOpenGraph image=http://mysite.com/image-for-page.jpg}
If you haven't done that, please do so. Otherwise, let us know if you're using an Open Graph plugin that you think should be setting the tags for the page.
Thanks,
Alex