I am getting thumbnails also. When I click o enlarge them (such a nuisance) they do get bigger but are blurry. I miss the big ones. My eyes are way too old for tiny pictures! Is there a setting we can change to go back?
Also, I started a post the other day: I no longer can upload a picture the way I always have. The format is acceptable. But maybe I can't because my photo isn't thumbnail size. IMO, it's a waste of time to pist such a tiny pucture.