Seems these beta keys don't actually get you in the beta.
I apologize for any inconvenience this issue may have caused, as I can understand your frustration with not being able to play the End of Nations Beta. I have reviewed your account and I do see that you have applied a beta key code. However, this key does not actually allow you to play the game, as you must first acquire a beta invitation as well before you are able to play. I understand that this may sound confusing, and I will do my best to better explain this for you.
When you purchase or acquire a beta key and apply it to your account, you are then placed in a queue of players who are waiting for an invitation email into the beta. While you have a much higher priority to acquire one of these invitations, we cannot guarantee that you will receive one for the closed betas. We appreciate your patience, and hope to get you up and playing as soon as possible.