I have verified that I have both achievements and have tried to enter several times - yes, by logging in through my battle-net account. Despite every attempt it still comes back that I have not earned the achievements and thus unable to enter the contest.
I additionally logged in and out of WoW 5 separate times to refresh/update, still no happiness shining down on me.
Am I the only one encountering this problem? At this point I am inclined to think its more on the MMO end, though would really like some help so I don't miss the window to participate in the contest.
Thanks
Update - got lucky on the 10th try, completely closed down everything including battle-net and it finally accepted the entry, good luck folks.