I had no idea there are 632 exchanges listed on CMC. That's a very large number. In the mind I only hand a few such as Binance, Coinbase, Kucoin, Kraken, Coinbase, Bitfinex and some few others but 632 was unexpected. I wonder how many of them are legit?

If bkex disabled withdrawal and kept the deposit enabled also telling they were involved in money laundering then it's a huge red flag.

https://support.coinmarketcap.com/hc/en-us/requests/new?ticket_form_id=360000562051
The above link is a good start to report the exchange.