Hi, Maarten.
I met the same problem as Zhang Xin mentioned above. After I logged in nitrc, the page redirected back the original adhd-200 page without releases, and also showed me a "login to nitrc" button. I made sure I has typed the correct login information and registered with the 1000 Functional Connectomes Project. My ID is niulimin.
 
I don't konw why it doesn't work.Any help would be greatly appreciated!