They don't work, you have to do it through skrill or gift cards, and either way, once you complete a transaction, withdraw the btc, you might wake up one day and find out that you're blocked due to VPN.
Also note, most paxful can detect if you are using a vpn, and some merchants don't allow transactions with VPN/tor
Also note, most paxful can detect if you are using a vpn, and some merchants don't allow transactions with VPN/tor