please send all your BTC to a new wallet before you try to claim your BTC Gold. And it does not matter which tool you are using. if you do this all the scammers will get a private key / seed to an empty BTC wallet.
Good point.
Just to clarify: So if I send all my BTC to a new wallet, the BTG will remain on the old one?
yes, the BTC Gold won't be send if you send your Bitcoin. there was a chainsplit.