Hello,
i had the same problem, using windows 10 tablet.
Some settings were saved in .json file some settings not (for example color settings).
When i reopen the HyperCon tool this settings were again on default value.
I solved this problem for me with settings of the HyperCon.jar file. With right click properties on
the file name and then a checkbox with "security" setting (file from other pc bla bla...) or something.
Now all values are saved correct.