Issue
You received an error that stated "Your password has expired. Please reset it." After resetting your password, you received this error again.
Resolution
To complete the password reset, the new password must be a completely new, unique password. Passwords that have been reported as compromised on another site cannot be used as your new password (even if that password was used by a different person).
To generate a new, unique password, we recommend using a password generator.
We recommend using a password never used on any service that you use henceforth only for Heroku, and store this password in a safe place, like a password manager (like LastPass or 1Password).
You can restart the process by resetting your password. If you continue to have this problem, please follow this account recovery article.