MEXC exchange: I don't know when I last used it. It's because of the demand for KYC; I decided to put a hold on it because I have other exchanges that I'm using without issues.
In your other substitute exchanges, the ones you use without any "issues", do you have to pass KYC in them? I guess you do, if they are centralized exchanges, so i'm wondering what's the difference between those exchanges and MEXC, nothing i guess.
so it supposed to be surprising when they end up being somehow connected to money laundering themselves.
If you run a thorough investigation of every crypto exchange and money service business, nearly all of them would have links to money laundering and sanctions violations, either wilfully or unintentionally. MEXC isn't the first and would not be the last. Even the Bank Of America was recently fined $1.2b for money laundering and sanctions violations.
