The save button is disabled. Unable to save any configuration.
There could be three causes for this issue when buttons are not enabled:
You've launched the application without Administrator rights, therefore the software can't write the configuration to disk.
You are using a limited version of the application that has the save button disabled by default. You can unlock it by purchasing a new version of the software.
The data you've added doesn't correspond to the standard used by the software. Double check to see if everything is added properly.