problem with accessing admin in directadmin

Guys i made the install as stated
https://www.directadmin.com/installguide.php

but whatever pass i put on setup.txt i cant login to http://dadmin.best-web.gr:2222/
is there something else i have missed ???
its my first try to leave cPanel and i dont know if it has any tricks for it....

Login to your server with Putty (shell) and reset the admin password using

passwd admin

Once you have reset the password, try to login to DA again and see if works