I really don't understand that tech. If you have wireguard on your machine, it shouldn't be able to leak your IP address in theory. Do they rootkit your PC or some shit?
Eh, if you put it on a router, how would they know? Was going to set up wg to route to one IP to allow multiple households - but after the witcher fiasco I thought 'fuck it' and unsubscribed.
What they do is they monitor the ownership of blocks of ip addresses they call it autonomous systems numbers or ASN’s it’s basically the way that farms of servers claim ownership of ip addresses