I haven't tried Cat.ex exchange yet and will probably not try it very soon because that is another exchange which is doubtful for me. I mean they do not have a bad reputation over this forum such as scam accusation, slow or no support, not being able to withdraw or held token or coin, and so on, but their 24-hour volume of $434,859,514 USD or equivalent to 54,631BTC is already an indication that they are not being honest. I don't believe such figures in an unknown exchange like cat.ex.