After earning this ornament way back in Warmind it has been bugged on my account ever since. I hoped this would be fixed with the reprised iron banner set. It was not. I do not think it is an issue with not actually achieving the season rank as they were discontinued after Warmind (I think) and even if they were still a thing I have claimed 55 Iron Banner Engrams this season. After grinding for the set I would like to be able to use the ornament I want. Thanks