Aemaeth. Sorry for the inconvenience, Let me write to Humble Bundle that your code is already used.

Hi Aemaeth, sorry i cant resolve your problem, by confusión me, let me explain you, I buy the suscription of Humble Bundle, and I Kept the Idea I recive a Gift Month to Humble Bundle and a Games tu bundle, but no, only recive a month Game, this game and another games appear in a old bundle, this pack only Im use a game Bob and His Blob, this is the reason why you cant activate the key.

Again Im sorry for the Inconvenience, If you wish put me a negative rank no problem
It was my mistake and as a responsible and mature person, I accept my mistake