Is this an All Nippon Airways lounge we're talking about or is it just coincidentally named ANA? If the latter, why would you expect to have access as a *G? Star Gold grants access to (some) Star carrier lounges when traveling on a Star carrier, it does not guarantee access to whatever lounge happens to be at any airport a Star carrier flies to. If you want to access independent lounges regardless of carrier flown, get a Priority Pass membership.