Are you sure it is a US Armory problem? My characters' profiles on the US Armory have been updating just like normal for the last week, including about 4 items I've equipped in each of the previous four days.
At first that was a problem with US armory ,when armory got updated too many ppl asked for request from wow-heroes at the same time That problem leads to temporary ban from US armory that last 12 h .