"UPDATE 1: For wrong code issues You can contact Jiggsy, EA Australia's Community Manager for Titanfall by emailing him at: eacommunityanz@ea.com
Three things:
1.
Do not give away the code you got for the wrong platform. It may affect your chances of getting a new code issued.
2. Please be polite to Jiggsy. He's the only one on duty at the moment by virtue of time zones. Being rude will only hinder the speed at which your emails are processed.
3. Please be patient. As Jiggsy is the only one online at the moment and there is obviously overwhelming interest in the beta at the moment.
UPDATE 2: EA have identified the source of the issue so they're one step closer to fixing it. Your continued patience is appreciated
"