If you wish to change your password for your account you obviously need to know the email address associated with your account. Track Attack is using Auth0 to handle the login and passwords and here is how its done:
Log out of your account (dropdown menu top right corner on the main page). After you have been logged out, click login again.
Click on "Not your account" as shown in the next window.
Click on "Don't remember your password?"
Write in the email address associated with your Track Attack account. If you do not remember which email address you have used for your account we recommend searching in your email inbox, or just try the ones you have used recently... Without the correct email address, it's impossible to go any further
You will now receive an email with a link where you can reset your password.