Comment box doesn't load

Hi,
I have been trying to get facebook comments working without luck. Only headers load but not the comments box. I am using Sahifa theme, seo by yoast and Jetpack if that makes a difference.

En example can be found here:
http://gydjur.netfelagid.is/sosan-sem-umbreytir-kjuklingnum/
Comment replaced by “Komment”

Thanks,
Anita

https://ww.wp.xz.cn/plugins/facebook-comments-plugin/