Join this exchange if you like captcha challenges. I tried to create an account and was challenged 15 times. I then tried to log into my new account and the captchas were never ending. I was never able to log in. I must have been challenged 50 or 60 times. I finally sent an email and told them to delete my account.
Been using the Crypto trading side of CEX, not very good experience and support takes a while to respond. Can't talk about the brokerage services as I've made no use of them thus far