Cannot select toons for posting on these forums

I normally post on my "main" Melandroso @ Aggramar, but for some reason I cannot choose here for posting. I can find her on the armory fine, but she is not available to choose on the forum drop-menu nor on the list for "Manage characters".

Others are also reporting weird issues on the Armory, like not being there, so I assume this is bigger than me. Just skimmed through the threads here and couldn't find info on this particular issue.