Actually I've seen this problem on here but don't know how to fix it sorry.
Well I had just submitted a wallpaper in the Alice Nine section called Shou but when I was going to edit it the next thing I know its deleted. Its not in my gallery or in the recently submitted but when I go to one of my walls it does show up on the side but when clicked it says it was either deleted or doesn't exist.
I hope someone can help.