World of Warcraft help DX

[xigbar]

Hi everybody. I know this isn't a G-rated game, but nothing about anything over G will be talked about.


I recently purchased the little 1 dollar free trial for World of Warcraft- WoW -. I then proceeded to buy the burning crusade expansion pack. 1 year ago.

Now I want to play the game, and I have the trial installed. I recently installed the Burning Crusade expansion pack, and when I went to go update my account so I have all the features and the full days, it said my AUTHENTICATION KEY was invalid. I checked it 10 times- it's perfect. Even my friends checked it. Does... anybody have anyhelp for me?