I tried this mixer and was waiting for 12h it to mix. And have to conclude that it is absolutely useless piece of crap. It's transacations are absolutely easily tracable. You can see that your transaction going to some address, than going to other, than going to your withdraw address. Yes, there are some other guys transactions, but they don't hide anything. Using the stupidest amount based analysis you can get the original bitcoin address.
whirlwind now will respond that it is designed to be so, that I should wait for more (more than 12 hours?), I should now withdraw all the sum (but parting will not help, I need all the btc go to the same finak address) etc. But perform mixing is your job here, not mine.
In fact the design of this mixer is extremely stupid, I strongly do not recommend using of it or take seriously.

So I made a deposit yesterday, confirmed, got the note. Used the note to withdraw, get a message like "Could not perform withdraw". Did not get the incoming transaction. But now with this note a get a "balance is empty". What the hell??! Whirlwind already has scammed?

So I made a deposit, the transaction has more than 50 confirmations, but getting this

Check transaction list
Status: Deposit of XXX BTC confirmed.
You will be able to access the Withdraw page with your note after the deposit is fully confirmed.

On the withdraw page button "withdraw" is disabled for me.

If I search for deposit address on blockchair it has 2 transactions: 1) is incoming from me, 2) is outcoming, the balance is zero.

What the hell?!! whirlwind has already scammed?

That's a nice official answer, as useless as your mixer.
Getting a 84% risk bitcoin from mixer is stupid and dangerous!!! You can do nothing with it. If you send it to any other service (except for another mixer) you will loose your money and get banned.

So I tried to use this mixer with the lowest fees. Had to wait for 12 hours. I AML checked the incoming transactions and the result is 83.4% rist. So I find this service absolutely useless piece of crap.