Don't worry about the questions. As I stated before, the reason for the forum is to share information.
If your address says that you live in the US, it's not a problem using a VPN for another country.
If the book bans players from the US and you give a US address, don't play there with a VPN. It's a recipe for disaster. They shouldn't even let you register.
If you are talking about Jetwin, you are fine. They just won't let you play in the live casino.