If encountering difficulties accessing your US Domain Center account, consider the following steps:

1. Clear your browser’s cache and cookies. Then, restart the browser and attempt to sign in again.
2. Utilize a private browsing session and retry signing in.
3. Ensure you’re using the correct username and password combination. For instance, verify that you’re entering your US Domain Center username and password, not your email credentials.
4. If you’ve forgotten your username, retrieve it using the designated process.
5. If you’ve forgotten your password or find your account locked, proceed to reset your password.
6. Review the status of 2-step verification (if activated) to check for any issues.