Because they will loose all the money and also need to pay extra fees in a chargeback/fraud case .If it is the VPN, I don't understand why that would bother a formation company. My hunch is it was the pre-paid card with a funny name. Or maybe both.
You can give them any name and address for internal records because they can't check citizen records in other countries, although officially you're "supposed to" give your real name. But for filing the BOI with the state, they essentially provide a nominee service.