in-game console
/rcon bob !admintest
the blue console
!admintest
please change your password later, after releasing it to the public
your admin.dat lacks guid, which is why I suggested you to do !setlevel to set admin level to a player (including yourself). What you should do to populate admin.dat is define all the admin levels and flags required, and then do !setlevel on the to-be admins when they connect to your server. That should create the [admin] entry automatically with the guid.
As a start, connect to your server, !setlevel yourself ( /rcon bob !setlevel soul 5 ). it doesn't matter what your nickname at that time is. You can change that latter by editing admin.dat. The important thing is to capture the guid.