This key has already been redeemed. Please enter a new key.

Hello,
I recently bought the game in the Humble Mobile Humble, but when I try to redeem the key to set up my account, I get an error saying the key has already been redeemed.
(I first had problem with the copy and paste from the humble bundle page, and finally had the message by entering manually the key)
What can I do ?
Thanks,
Nicolas
I recently bought the game in the Humble Mobile Humble, but when I try to redeem the key to set up my account, I get an error saying the key has already been redeemed.
(I first had problem with the copy and paste from the humble bundle page, and finally had the message by entering manually the key)
What can I do ?
Thanks,
Nicolas