As I said earlier, words about multiaccounting are just funny for me, because that was my first and last duckdice.io account.
Transaction was really approved, which was surprising for me. Here is screenshot. https://ibb.co/C951JXx
But they decided to send funds not to the wallet that was specified in the withdrawal form, but to the one which I used last time. That seemed strange to me, but in general I have the money and I'm glad that my issue is closed.

Yes, I passed KYC lvl 3. "multiaccounting" Is just fake reason to cancel withdrawal, of course they don't have any proof of multiaccounting.  Anyway, my account was unbanned and withdrawal approved. Thank you everybody, who replied to my post, I think you had a hand to my happy end.

Just checked my account. Looks like I can log in and request the withdrawal, what is surprise for me because I couldn't, but I'm not sure it will be approved. Now you can see cancelled withdrawals and my balance
https://ibb.co/2htBpr3

Guys,  my post was updated. Check our conversation and you will see, that I'm  not just  player, who had lost the money on gambling.

Guys, never play on that scam casino. I've won just few bets on tennis (Wimbeldon games), wanted to withdraw, but administration asked me to complete 3 lvls of verification, which I've successfully passed. After it they confiscated my winnings, without real reasons. Told me something about arbitrage bets, but that was just regular bets on TOP tennis match. That's sad. Don't play there, save your money.