But for whatever reason they decided to send me a XBone code even though i signed up for PC. WTF Respawn
Same for me. It's an issue they've been having. You can swap it for a PC one though.
http://www.incgamers.com/2014/02/swap-titanfall-xbox-one-beta-key-titanfall-pc-one
Though it seems ea help is down for some reason.