I am not on the side of the casino, however to see these amounts being trusted to off-shore and essentially anonymous entities, is very disappointing to see. While you wait for your money, they are probably laughing and probably smoking cigars that you paid for.
I believe you did not check the screenshots in the OP which shows his withdrawal history before his current withdrawal request.
If you checked it, you would have knew that he made successful withdrawal more than $2M during May.
Duelbits served him really well IMO as they paid over $2M to him in a month, and the current one seems to be need further investigation by asking KYC.
It is normal for such a huge amount, KYC may take few days and other checks may also take another few days.
Actually this case is still in the process, he is not being scammed, he needs to be patient for a while to wait the process.