Board Thread:Support Requests - Getting Technical/@comment-25532585-20151201042049/@comment-168424-20151202005026

Okay, this is a common problem. For thumbnails to show up correctly the image that is trying to be pulled must fit a specific requirement for ratio of width to height and some minimum (I think) width and height. Unfortunately, Wikia doesn't actually tell us what this info is (how it picks the image or the various criteria to make it a thumbnail) as far as I know, so you'll have to ask them at w:c:factvsfiction:Special:Contact/general. Please post their answer in this thread, if it helps you and makes sense.