Facebook comments

[ghost]

I have a website witch uses facebook plugin comments. I'm looking for a way to have those comments inside a screenshot. If I use the simple html2canvas I get a blank box instead of them. So I try to use html2canvasproxy but now it print some javascript console log instead of the facebook comments.
It shoud be like www.peoplesecrets.com/screenshots/1.png but I get www.peoplesecrets.com/screenshots/2.png . I noticed that the html2canvasproxy.php saves the facebook plugin html correctly. How can I solve?