Yea, that is what I clicked on yesterday to login to see if I am eligible for a discount but it does nothing when I enter my login info. Doesn't login and gives no error.
I bought my copy after Oct. 2010 so I guess I got ripped. HardOCP posted an article saying it was free for previous owners and was giving Brad browny points for it. Well, they were FoS and Brad gets no kudos from me, and no, I won't be buying FE.
You could try the login at the store-page to see if you are eligible. If that still doesn't work, you should contact support.
The end of Oct. 2010 was the cut off point to get 2nd expansion for free, too. If you bought E:WoM after that, but still in 2010, you should be getting FE for free. If you bought it in 2011, you should be eligible for the discount.