After Update to new JFBC and Joomla 3.62 no comments and pics

There's nothing we can do in JFBConnect about this and reinstalling JFBConnect will not change anything.

If you go to Facebook's own Comment tool and put in both of those URLs, you will see the exact same behavior:
developers.facebook.com/docs/plugins/comments
So, that's just how Facebook is going to load those comments.

Reading more about the Comment Mirroring feature, please make sure to note the following:

When you share a link to your website on your Facebook Page, comments from that webpage will also appear as comments on your Facebook Page post and vice-versa.

Specifically, that you have to share a link to the content you want the comments to be mirrored with. Not all comments will go to Facebook if you haven't already shared a link to that article on your Page. That's my best guess as to why the behavior is different between those 2 comment boxes. Again though, there's nothing we can do on our end to change things as JFBConnect is requesting that the comment box be displayed the exact same way on both articles.

I hope that helps explain,
Alex

I guess I'm still confused about the issue. In the latest post, you mention:

We check it all and it dont works with the comment function for new Articles. I dont no why.

That's the first time you've said that. Is this the issue that was fixed with the other extension? Can you be very specific about which issue you've mentioned above that you're still having issues with? We'll gladly help investigate as we understand things more.

Thanks,
Alex