Dante Domain Manager (DDM) is provided on a Linux platform and is packaged as an ISO file, which includes a streamlined Linux distribution that has been preconfigured for the DDM application. As of DDM version 1.7, the DDM ISO includes the Rocky Linux 9 distribution.
The root password here refers to the password of the superuser account used for the Linux platform running DDM.
Considering the DDM application is provided as a whole, any services/modifications should be added externally to the application. This means that Audinate does not provide the root password for the DDM ISO.