can you tell us the previous version of spacedesk installed on your machine?
Can you also try to check if spacedeskService is still running?
Just run services.msc and find spacedeskService.
Thanks for checking.
Back to device manager, after checking the “Show hidden devices” + “Devices by connection”, can you find several hidden HID Keyboard Device and HID-compliant touch screen?
If there’s any, please try to right-click -> Uninstall all of it.
Then check if you can now uninstall the spacedesk virtual HID device.