Well, in my experience the tracker, the daily one is still available to you after the 12th week. I am at session 9 but in week 14 i believe and i still have access to the session diary and the daily symptom tracker. Now the weekly symptom tracker has stopped at week 12. So there ends my weekly graphics. But the daily tracker helps a lot. Now i don't know how the website was designed so i don't know if the weekly tracker was supposed to keep going or not. But i can assure you you will still have access to the session diary and the daily symptom tracker :) Hope this helps!
-Diva