When you first subscribe there is a link on the confirmation page to access the software in the green text box, if you missed it, you may need to logout and then log back it to to gain access. Go to the homepage and select logout under the member login box. If you are logged in it will say your username.
Go to the top tab where it says your name and hover your mouse over it and select log out. Then when you log back in you will be automatically redirected to the software control center.