What would happen if a US or Singapore citizen created account through VPN, invested, and you later figured this out?
Nothing would happen lol. lot of folks use vpn to participate in ico(s), you'll be able to withdraw bkb tokens to your eth wallet after ico ends. this is gonna be one very good scam. 
How long exactly have you been saying BetKing is a scam and about what have you actually been right? I don't think there's a single thing.
Just saying. You're the one with negative trust.