Pets codes have not been distributed yet, so don't panic if you haven't gotten one. Remember that these pets are only going into the game itself as of today, so even if they sent out the codes as soon as you registered, you wouldn't have been able to use it yet. Remember, this is unfortunately a US-only promotion. I can't condone people from other parts of the world trying to work around that, but... you're not going to see me trying to stop you, either. Enjoy your robot, (not really) everyone!