If you cannot log in, resetting your password is a good next step.
Log out of your current Tettra session, if you're not logged out already, and go to https://app.tettra.co/password/reset. Add the email address that is connected to your account, and click Send password reset link.
Once you do that, click on the link you'll receive to set a new password.
Note: Passwords reset links expire after one hour.