Configure your MySQL server's root account (or whichever) to match your SQL settings in inter-server.conf and login-server.conf. The settings you highlighted are for the char and map server's login authentication, not your MySQL server.
About the MySQL user, you should set a valid MySQL user and password at least in your conf/inter-server.conf file. Also, the server communication ID and password are made so that char and map servers can communicate, so they must be the same. Your server communication account and password are stored in the `login` table inside your database, with its sex marked as 'S' (usually on the first row).