On laptops/notebooks with touch displays, RGS defaults to the touch interface. If a keyboard is attached, the Receiver UI may behave badly. One of the symptoms is that Match Receiver display resolution is enabled and cannot be unchecked. Another symptom is poor performance when selecting from different IP addresses or hostnames in the RGS launcher.
To force the desktop user interface for these devices check the Force RGS to use the desktop user interface, even on tablets option in the RGS Receiver Configuration application. See the User Guide for more information.
Force Desktop option is found in the folder where you have the receiver installed. The receiver will be installed a folder labeled Hewlett-Packard. Launch the receiverConfigApp.exe. it is on the General tab. Save. Try launching your receiver and see if you can now change the boxes.