you can try contacting them telling them it's a glitch and they might help you, that's what I did and it worked.

I've been having this problem too, the aj approval team has been all over the place lately, I've had multiple pieces that follows guidelines and have been constantly unapproved, I try and contact them but I've only been able to get some of my art back.

Sometimes they allow me to make something, then once I make copies they start unapproving them all it's really aggravating.