I did deploy 8.11.x many times from scratch. No issues. For a test purpose, I can suggest to try:
1. re-deploy the vRO and set a root password with a minimum of the special characters (I think minimum one is required, so try to use '!'). After that the password can be changed to more complex.
2. Make sure that NTP servers are configured and they are reachable (if more than one provided, there is should be no spaces between them. Like 1.1.1.1,2.2.2.2).
3. The A record and PTR must be created and resolvable before the vRO deployment. If more than one DNS provided, there is should be no spaces between them.