It is a scam, I don't really need to check the website to know that it is, people need to think a lot more about what they do with their money, do you think that someone is going to be as generous as doubling your money and not get anything in return? You have to remember that once you send your coins to a wallet that you do not control then it is impossible for you to recover those coins, scammers are taking advantage of this by making all kind of promises to gullible people so they sent their money to them and if you do you are never going to see that money back.