Server login problems from terminal (NGINX, UBUNTU 16.04)

Hi there,

I’m create ssh key following this tutorial. But when i’m set PermitRootLogin ‘yes’ to ‘without-password’ then i’m running ‘reload ssh’ command and i’m face “sudo: unable to resolve host 360webtemplates” these error and after exit for terminal then i can’t login in my server from my pc terminal and also can’t login from “Digital Ocean Droplet Console”. I’m try to reset my root password following this tutorial and got reset password. But when i’m using droplet console and try to login as a root and setup new password then showing me “Login Incorrect” and also try to login from my pc terminal, But showing me “Permission denied, please try again”

How i will fix these problem? Please help to solve this problem.

Thanks so much, Arafat

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If you are unable to access your droplet at all, you can follow the steps here on how to recover access to your droplet:

Hope that this helps! Regards, Bobby