It can be difficult to troubleshoot an email account that is suddenly showing the incorrect time zone. The best approach is to first check the email client’s time zone settings. Generally, the right time zone will be set by default.

1. Check the settings in the email client to make sure the right time zone is set.
2. If the time zone set in the email client is correct, you can try adjusting your device’s time zone settings.
3. If the time zone still doesn’t update, you might need to contact the email service provider for help troubleshooting.