Thanks. It says there :
"If you withdraw money before reaching the minimum wagering requirements, your bonus and winnings will become void."
OK so I understand I will lose the bonus if I withdraw. But if I win, is it true that you will also cancel my winnings if I withdraw before clearing the entire bonus ?
Why is that ?
Some Casinos have such a rule when they give you chips to play with, but in your Casino I play with my own money and not with the bonus money. So basically I can't win anything unless I clear the entire bonus

You can win as much as you can, but you can't withdraw anything. If you do, then you can not claim any more deposit bonus, but on the other hand you will be eligible for accumulating loyalty points.
Thanks for your reply but you are still not being clear.
Lets say I deposit 1 BTC and get 1 BTC bonus. I play and win 0.5 BTC while clearing 0.2 BTC bonus.
So now I have 1.7 BTC in my account and 0.8 BTC in remaining bonus. Can I withdraw 1.7 BTC ?
Or maybe if I try to withdraw you will void my 0.7 BTC winnings and allow me to withdraw just 1 BTC, the original deposit ?