How to change the root password?
If you want to change the root password of your VPS, go to https://ZZZ.com.ua/panel/ and enter the login details (1) i.e. the email or profile name to the user panel and the password that were set at the time of registration, and then click on the "Sign in" button (2).
Go to the VPS Servers section in the user panel: https://ZZZ.com.ua/panel/en/vps, and click on the "Terminal" button(1).
Type the following command in the terminal window:
# passwd root and add your new password. For security reasons, the password is not shown.