CSS app corrupt – how to clean install windows

I have 6 mode selectors in my script and now for some reason when I try to add another or edit any of the previous ones random behavior such as elements fo the script just disappearing for no reason are happening.

How do I start with a clean install to delete all of the preferences – there’s no uninstall or folder that I can see associated with it, just the ControlSurfaceStudio exe file. There is a control surface studio folder at C:UsersxxxAppDataRoaming but its empty and deleting it doesn’t affect the app