That's just an address generator - you can't create or broadcast transactions with it. To be able to spend your coins, you will need to import your private key in a compatible wallet - like those found in the Bitcoin Gold website[1]. You can somehow create a raw transaction and sign it with your private key in the Sign tab. But that's it.
[1]
https://bitcoingold.org/downloads/Thanks for your answer.
There is another way to import my private key?, Because it's take too many time sync all the blockchain (150GB)