It's passwd, and by the sounds of things you have messed up using tuxbox, in which case as you say he is a pay server and you can't get on, simply flash the box yourself so it belongs to you and you can then do what you want with it.
Played around with tuxbox and made deliberate mistakes to see what happens, once you have reset password using the links provided to you - you should be able to log into the box with username root, as you have removed the password it should auto move to a prompt and not ask for a password, then as said type passwd and hit enter, then enter a new password, and as mentioned, you can not see the password getting typed, so hit enter - enter new password again, then hit enter again, done.