I don't know the details of Webroot, but if you can't:
- disable the program
- tell the program this site is OK
your best bet is to uninstall it until they fixed it. Or maybe it's a real thread, and they will never vet it.
Did you already contact them?

If you want to keep using it on this Windows PC, install Linux on another partiton and use that site after booting into Linux (or from another PC, or from your iPad or Android tablet).

Kees