Ironically we spoke earlier on how EA has to make sure Titanfall has a clean and flawless launch for it to become a successful title, but this Friday that passed people were left shocked. Titanfall stated that the Beta Keys for the game would come no later than 11:59 PM on Friday but that wasn't the case. Many users reported not getting Beta Keys til the next day and some of those who received it got the Beta Key for the wrong system. There is a work around now if you received the wrong key, I was one of them but only do this if you are sure that EA didn't send you the right key later on.
If you got the wrong type of Titanfall beta key, they recommend you try this: