When I submitted the recent promotion sales post, no picture was available for thumbnail.
I think the post needed to be made a certain way so that there is a thumbnail when posting to things like reddit, otherwise it uses the generic empty picture, having the formatting show the picture would be better, just forwarding this along
https://www.reddit.com/r/ChroniclesOfElyria/comments/7vyvna/chainmailbikinisandmore/