Once you’ve made and applied this change it will not be possible to connect to ssh as root. You have a couple options to use instead:

• Log in via SSH with the new user account you created in that tutorial and use sudo to run commands as root or sudo su to launch a shell as root after you are logged in.

• If for any reason you are not able to log in with the new account, if you are using password authentication (instead of ssh-keys) you can log into the web console in the control panel (Droplet->Access->Console) as root. The console is not powered by SSH. Instead, your droplet sees the console as it’s local keyboard and display.