Thanks Asura it worked, finally!
After setting up your MySQL server you have to create a user which is used by the RO server to communicate with the MySQL server.
The account you created must have the proper privileges for your RO database to be able to select, edit and delete data. Most common way for newbie is to use the option "create database with same name and grant all privileges" (or something similar) when creating the user for the MySQL server. If you do so, you wont have to set up the privileges on your own.
make sure you changes it in the config files and also in the "login" table of your database.
If your phpMyAdmin is accessable through 127.0.0.1 it's on the local computer.
After setting up your MySQL server you have to create a user which is used by the RO server to communicate with the MySQL server.
The account you created must have the proper privileges for your RO database to be able to select, edit and delete data. Most common way for newbie is to use the option "create database with same name and grant all privileges" (or something similar) when creating the user for the MySQL server. If you do so, you wont have to set up the privileges on your own.
make sure you changes it in the config files and also in the "login" table of your database.
If your phpMyAdmin is accessable through 127.0.0.1 it's on the local computer.
Thanks for the help kenpachi!