Why are all my gallery images being deleted daily?

They contain nudity, but not pornographic, and they are constantly being deleted every day, I have no thumbnails at all, and when I look at them by browsing in the submited galleries they have no tumbnail, the default one for images containing nudity, would it kill an admin to tell me why they are deleting all my work, every day?

It's getting rather annoying, when I am following all the guidelines, and still get deleted. the first image I uploaded was my fault, but the last 3 times, they are deleted without a reason, they have proper warnings, and no thumbnails.