Short answer: Request a password reset link if you cannot sign in with your current password.
Steps
Open the login page.
Select Forgot password.
Enter the email address for your Typeshutter account.
Open the reset email and follow the link.
Enter a new password and return to login.
Notes
Password reset links can expire for security reasons.
If you use Google or another provider to sign in, reset your password with that provider instead.
Troubleshooting
If the reset link is expired or invalid, request a new one.
If you no longer have access to the email address, contact support with your account details.