Well, I have the same problem and this article doesn't solve anything. It shows what is the nkvuser password. When you want to execute anything in the shell it points out that you need to be root. su - command doesn't work. Login as root doesn't work due to unknown password. Resetting password is only for users not for root. What is the solution than? how to remove storage, how to add new local drive as a repository - everything needs to be done from the command line as root.
Nakivo version: 10.5.1, Ubuntu 20.04