IF the "skins" were actually walls, they may have been rejected. Notifications aren't sent when a wall is rejected because the moderators get a lot of angry,rude,cursing responses. The skins or walls that were accepted, probably need to be updated, if they were submitted in October, because of a WC system crash, which is displayed all over the site.
Beware. Complaints about rejections aren't responded to kindly here. Just as the rejectee isn't too happy either. And, if it gets bad, this thread will probably be locked.