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The Answer to this question is on the previous page and again a few pages before that but Ill repeat it once again here.
In linux when you type a password it does not show any characters at all but it is still reading your keystrokes. So just type your password in and press enter. If you entered everything correctly it will log you in.
For reference the login is as follows
Username: root
Password: hrace009
Since it appear that you are still new to linux Id recommend checking out the ubuntu documentation so you can learn more about the operating system that your server is running on and hence wont have problems like this
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