Rated 4 out of 5 stars
It can't magnifies those photos posted by pages by a "link" which is the photo comes from another website or just an uploaded photo by the a FB page. otherwise its wow.This review is for a previous version of the add-on (2.7.1-signed).
The problem might be that the "Others" checkbox is off in Thumbnail Zoom Plus preferences. If that's not it, email me and I'll help figure it out. email@example.com