Step One: Spam their twitter feed or do the little dance they want you to until they send you a DM
Step Two: Use code before then telling them the code they sent you through DM had already been used thus promting them to send you key #2.
Step Three: Do the same again this time take a SS of code #2 not working as "Proof" that the code didn't work
Step Four: Try again if you feel ballsy
Putting those old GPS skills to work and scored myself 3 beta codes for the price of 1