Comments boxes have disappeared for new posts and old comments are not syncing

Hi there,

The upgrade to version 1.5.0 seemed to work really well with wp 4.4.2, however, comments from old posts on the blog will no longer sync. Also, if there is not a comment on a post, the comment box does not show, however, if there is a comment there already, the comment box shows fine (points in question):

Comment made, comment box available:

http://davidlawrie.co.uk/blog/ishikawa-studios-progress-update-2/

No comments made, no comment box available:

http://davidlawrie.co.uk/blog/ishikawa-studios-progress-update-3/

For the first blog entries on the site, there were also a good handful of comments, but they are no longer showing, nor are they syncing. They have not been removed from the Facebook App’s database.

Hope this can be sorted!

https://wordpress.org/plugins/facebook-comments-sync/