Either the picture is still in approval, or it got rejected.
If you find this issue is still occurring and you've checked whether it's in approval or not, contact James, he's an admin whose good at fixing things :3
Kat ; F o u r t e e n ; England Junior Mod:Comment me if you need any help.
Whenever I try using Embed Code to show a picture..
Probably wasn't approved. You can see if a photo's approved or not by going onto it & looking in the top left corner above the picture, if there's no message there then it'll be approved but if it's unapproved there will be a little message saying it needs to be approved.
Junior Mod Ask me if you have any questions or need any help.