I am aware of this, as I stated previously with thumbnails just being a “image too large” image.
I’ve tried with images that both don’t have this issue and have, and neither of them let me change the thumbnails.
I want to upload my most adult artwork with thumbnails so people don't have to see the full picture unless they want to check it out. I also like to upload high res artwork but files end up being too large and not even a thumbnail made from the work shows up.
The problem is, I can't edit the...