Some would say that you were lucky, others that you were too lucky, and I would say that you shouldn't be surprised at all that they paused your withdrawal. I find it a bit suspicious that you made a withdrawal after each win, and that you then made a deposit again, which in combination with the fact that you made a profit of even $10k must have activated some kind of security mechanism. I guess it didn't help that your deposits and withdrawals are in different coins, which in combination with everything else doesn't look very legitimate.

I must mention that this is only my opinion, and that I have no connection with that company, nor can my opinion affect the outcome of this case.