You were a member of the old site
Neurostim has a new version. The accounts were carried over with their scores and rankings. To protect your account, you are asked for a new password the first time you log in.
Your account has an email address
Log in with your username and your old password: a link is sent to your address to choose the new one. You can also ask for this link from Forgotten password, with your username or your address. If the address is used by several accounts, the message has one link per account.
Your account had no email address
It is kept as an archived profile: its scores stay visible, but it can no longer log in. To get it back, write to the administrator through the Contact page with your username and an email address. Once the address is added, ask for a link from “Forgotten password”.