Don't bother, you won't get anywhere. If you were silly enough to fall for a Ponzi SCAM that didn't openly admit to being a ponzi but rather say they earned their money "trading" then i'm sure you all won't be smart enough to get your money back via the law.
I'm not trying to be an ass, but if it is to good to be true it probably is, and crypto double was more than to good to be true.
I wish you all the best, but my doubts are high.
BTW if you are wondering the difference between Crypto Double and the ponzi games in this gambling section, Crypto Double was a SCAM and said they did trading to produce double your crypto, which is in fact ILLEGAL. Ponzi Games are blatantly stating they use a Ponzi Structure and that YOU MAY lose your funds by playing just like any other gambling site. Technically, they are allowed and are actually a lot more safer than what people think they are AS LONG as they are instant, automatic, and state all of the risks on their site. Weekly ponzi (and next ponzi which is uprising) are good examples of (so far) legit gambling games.