These settings are working for me i wanted to be max lvl 120 so i created extra levels until level 150 by pressing the +add level icon.
Also i had to trow the max player experience up to the last level.
But yea Rendrag09 every time you make a change in the server config tool it will delete everything that you manually putted in there. I keep a text file with all the lines i want to add to the game ini seperate to paste it in there every time i make a change in the settings.