I decided to change the root password that came preset on a fresh DigitalOcean server (ubuntu 12.04).
I used the first answer to this post: How to change root password in ubuntu?
sudo -i passwd
(set my new password on prompt)
sudo passwd -dl root
Now I can't login as root on tty1 on my server, nor can I access my server on Filezilla, etc...
What did I do wrong, and more importantly how can I recover my root login?
Thank you for your help.