You can resend your driver their password:
- Account > Drivers
- Click the "Details" magnifying glass, or click on the driver's name
- Under ELD settings, click Show More
- At the bottom of the ELD information area will be an option to send that driver an email with their password.
If you need to set a new password for the driver, it can be done by Editing the driver and updating the password using the two fields provided.