[tor-relays] Debian-tor Vs User

Switch from root to user = su usrname >Password. The problems start when I try and su to debian-tor. First I get a query for a password which it doesn't have. So I make a pass for debian-tor and enter it when I su to debian-tor. I enter whoami and the response is: user and not debian-tor. With or without a password it doesn't work. Secondly, if I su debia-tor > passwrd - sudo -u debian-tor nyx it produces a page and a half of pure gibberish. Sudo -i to root and enter nyx, it operates perfectly; and yes I understand I shouldn't run nyx as root.

How do I become debian-tor so I can operate my bridge correctly? Adriann