I received my withdrawal from bc1qq904ynep5mvwpjxdlyecgeupg22dm8am6cfvgq address.

This address have more than 500k transactions now. This address can be find in https://bitcointalk.org/index.php?topic=5314083.40 but I dont understand its WhaleMixer.com address or not.
USDT transaction come from ChangeNOW.

What the name of service you using? It's still so weird if some services help casinos with transactions but they dont have enough USDT and they need exchange another crypto to get it.