Sorry for not getting back sooner. There's a few odd things I see on your page. First, the Open Graph tags that are being inserted are *not* from JFBConnect. They're also being included wrong. The tags currently look like:
<meta name="og:url" content=....
However, Open Graph properties should not use 'name', they should use 'property', like:
<meta property="og:url" content=....
Can you disable/remove whatever is adding the OG tags currently and then enable JFBConnect's Open Graph integration?
Then, when you re-run the debug tool, you shouldn't get the warnings that the tags should be explicitly stated. Right now, Facebook is guessing at what the values should be because it's not really seeing the incorrect Open Graph tags you have on the page.
Hopefully that will help fix the URL issue, but we won't know until your tags are fixed.
Thanks, and good luck,
Alex