You pay 50% fee only if you request a withdraw every day and I think you don't want to do this.

Do no try to put this website into a bad light.
Withdraw fee is only when you withdraw, logic yes?
If you invest 40$ and after 30 days your earn is 20 withdraw fee is 0.2$ + 5% that means 1.2$. Where is 50% fee that you talking about?