Please read the instruction manual underneath above page menu „Documentation“ ( https://manual.spacedesk.net ). Chapter „UNINSTALL ON WINDOWS PRIMARY MACHINE“ contains very detailed information about uninstall, troubleshooting uninstall and an overview of all spacedesk components.
We cannot understand your statement: „…installing and opening ice without permission.“ What is this supposed to mean? How is it related to spacedesk? Nobody else reported anything like this before.
PS: There was a minor issue in some old spacedesk versions: A small user interface component was observed to survive Windows system reset. This did neither do anything bad nor anything good. Nor were there any functional spacedesk components left after Windows system reset. This issue should have been fixed quite some time ago. Contemporary spacedesk versions should be completely wiped out by Windows system reset.