OK it's now working.
I uninstalled the thing, plugged it into a hub, reinstalled, and nothing. I then uninstalled, including user data,
reinstalled and then unplugged from the hub abnd plugged into usb. Now it works.
Thank you whoever supplied the thing that made it work in the end.
I think it was the uninstall and reinstall, and unplugging and re-plugging several times. Hopefully it will continue to work. Hopefully.