The AE license was only available during I21 beta - it never made it to the live servers.
http://wiki.cohtitan.com/wiki/Mission_Architect_License
Champion 50s (blueside): Marc Bridge, Nicole Bridge, Fred Blaze, Colleen Storms, Sun's Chariot, Moon's Huntress, Point of Pride
Guardian 50s (redside): Connie Mand
AE arc: Spirit Plane Invasion, #29282, @Honbrid
Last I checked during the i22 Beta it was on there - but that doesn't mean it'll make it to Live, unfortunately. It may just be for testing purposes.
So I was tinkering around with my second (premium) account and wanted to see about the possibility of a 1 month AE license or something for it. It's currently only tier2 so it can run AE missions but gets no XP or anything. I just wanted to see about opening up Xp on that account for a month.
I found IO and WW licenses, I found extra publish slots for AE but I can't find anything that would let me run AE for some XP on that account. Someone in /help said they had seen it there but couldn't remember where it was found.
Anyone able to point me in the right direction?