[mothered]

Narrow down the ways they could be identifying you until you figure it out. I don't get how they could if you've essentially created an entirely new virtual identity.

^ This.

If each and every Identifiable detail (device Included) has been changed, you're operating under an entirely new profile. There's no chance of being Identified. It's like using your friend's account - nothing Is associated to you. And that's how It Is when creating a new account under the above circumstances.