If you are facing a Invalid username/password error when trying to login, it means you are entering the wrong credentials.

You can reset it by following the instructions below.
Reset root password button next to your instance
cmdreset-root at the end of the command (eg: C:\\path\to\ninja.x.x.x.windows.amd64.exe reset-root)reset-root at the end of the command (eg: /path/to/ninja.x.x.x.darwin.amd64 reset-root)