Due to all of the violations stated above, we were regretfully forced to void the winnings. As with any winnings removal we process, your original deposit was re-credited so that you may try playing again, hopefully without further violations of the terms.
Once again, I am so sorry that this happened. Thank you for your understanding.
That is a pretty sad story. Making 20k out of 400 is already insane, either you are very lucky or very talented. Not reading the TOS is definitely a problem with such kind of money involved. Where you able to withdraw at least some kind of winnings or everything got blocked? Maybe you can try and just to deposit again and go for the same profit? I would be so happy with 20k, this would be so much money. Imagine what we could use those kind of funds for in our alt coin trading book. The casino must have been relieved to not pay those winnings.
Full story says that he got his deposited money back, means that not all got blocked.
He also made another $100 deposit and he made $200 profit with it.
Making up 20k from 400 is indeed great as it is 50x ROI, but it is not something rare.
Just take a look at the contest at duelbits, most winners get more than 30x ROI of the deposited money.