I can not log in to my wordpress account

Hello,

My website https://www.nitidesign.com is since several days not accessible anymore.
I tried to log in to my wordpress account but I get the message that my account does not exist.
(To even be able to access the forum I registerd with a new user name)
I am really afraid that my website is gone.
The server at liquidweb is working correctly. So that is not the problem.

Is there anybody who can help to get my website back?

best regards
Anita