BlackFog requires a full edition of Windows in order to operate correctly. Restricted versions such as Windows S are insufficient as they limit third party installations outside of the app store.
If you are running Windows S or Windows in S Mode you will need to switch to the full version of Windows which is a one way free conversion otherwise you cannot run third party apps outside the Windows store.
To switch to the normal mode, go to your Windows Settings menu and click on Update & Security then Activation. Find the Switch to Windows  Home or Pro sections and then click the Go to the Store link. You’ll be directed to a webpage for switching out of S mode.