Ultimate fb imported comments not showing fb avatar

Hi,

I've installed this plugin into my website and we tried importing the facebook comments into our site, but we cannot make the imported comments to show their users avatar.
We have enabled the show avatar on both ultimate facebook settings and also on wordpress settings.

And another issue is that when we un-tick Override WordPress discussion settings, the changes will make "Comments are closed", even though we have enabled post comments on all pages in the wordpress settings.

Please help