Mariecee, any luck sorting out this problem?
I am struggling with the same! In Feedly, my posts appear either without any thumbnail (even though they have at least one picture) or in many cases show the first image AFTER “more” instead the first for the post (they are the same or very similar in size).
Facebook, on the other hand show the first banner on the left instead of any picture from the linked post. I would like to fix that!
My site is http://www.vercaaivan.cz
