Guess you just have to be lucky 
.
I've been using my signature payments on FortuneJack and so far I have doubled every payment:
https://i.imgur.com/wT4jmJp.png
.I've been using my signature payments on FortuneJack and so far I have doubled every payment:
https://i.imgur.com/wT4jmJp.png
Obviously fake screenshot. You are highly likely a scammer.
Check this post:
https://bitcointalk.org/index.php?topic=2489072.0
He promotes a scam casino.