The username is the email address that you specified during registration and you created the password yourself. If you no longer know the password for your account, you can request a new password via the ‘Forgot password’ function on the login page. Extra tips: Both the username (email address) and the password are case-sensitive. Please make sure you do not copy leading or trailing spaces when you copy passwords. If you are still unable to log in to your Sisow account after this, please contact our support department (via firstname.lastname@example.org or +31 (0)852 734-734).