7-Day Exp Boost

So, I referred my friends to the game, and they all got a 7-Day exp boost. I didn't have anyone to refer me, so I did not get it. When making a character, it said I could get this somehow in game. How do I get it? This isn't going to be any fun if my friends all massively out level me in seconds, which they already have.

Check the Visiphone. Normally, that is where rewards would go.

I received various rewards, but not this one. This one is specific to using a friend referral code, which being the first one to log in I did not have.