Alan Wake "The Signal", tip for early code redeemers

I have redeemed "The Signal" right when I purchased the game.
By then I was told I would get an email with a new code.This email hasnt come yet, BUT I was able to simply download "The Signal", as it was titled as "free" to me.Probably because I had already redemmed the add-on.So if You have not received the email with the new redeem code yet, just try the traditional way, go to the download and see if its "free".