So the main idea behind this randomizer is that each member plays their own rounds, each round costs 0.5 btc and ROI (return of investment) for each round is 20% this means that if round costs 0.5 BTC you would earn 0.6 BTC. You can stop playing and withdraw 0.6 btc, or you could start a new round (which is costs 0.5 BTC) and get another 0.6 BTC, then start a new one and so on. To double your initial deposit you need to play 5 rounds. To automate this process each new user have a "autorotation" option enabled by default, with this option rounds will be played automatically, e.g. if you have more than 0.6 btc in your balance it will automatically start a new round for you.
If you disable autorotation you only able to get 0.6 btc from your investment and you will be unable to receive payouts nor from random users nor from your referrals.
I just took a look and there is something fishy!
The account qweqwe got an income of 3,8 BTC an expense of 0,75BTC and a balance of 0,925BTC (This is your account xyu, right?) and so is 2,125 BTCs short...so the money got withdrawn.
I don't think that this is fair that you take out the BTCs, because nobody else can withdraw BTCs! The money is missing in the game to really get it started.
And how can the account qweqwe be set on auto rotation and have so much BTCs?