During a support conversation with my VPN provider, I asked specifically: "is it impossible to filter out a single VPN user since your IPs are in use by many?". The answer was yes, it is impossible.
I am not convinced though. There must be a way to filter out abusive VPN users in this scenario, even if many are using the same IP. Anyone know of feasible methods for this?
NB: DNS leaking, WebRTC and such is tested and secure.