Cant find any problem, and ur server sends heartbeats, thats good.
start your server and watch here if you can find its ip
(
http://dplogin.com/serverlist.php )
if yes it should be in the list, if no try to let your server run a hour and check again, do you als use the latest build?
But i noticed your server is in new zealand, are there many new zealand/australian PB2 players? because players from other countrys may got a bad ping and you not much players.
and you need to change ur op passwords.