I installed the latest version of ASCOM v6.5.16 below are my issues.
1) Image 1 - I clicked the advanced option, and the setup window flashed with the latest changes and immediately vanished.
2) Image 2 - Then the setup window shrank to the previous versions
3) Image 3 - I expanded the window and could see all the new options, whereas other than Beep Mode rest were disabled.
You can see my mount Firmware version detail in the screenshot.
Kindly let me know, What should I do to make the new options editable?