This exchange either hacked or broken. Look at two attached images. It has weird top rates, and there was abnormal trade flow when buy prices were lower than sell prices (usually green buy is higher than red sell).
I also placed few tickets about broken API calls, misconfigured DDoS protection (CloudFlare), browser DDoS protection for JSON API (weird). I first got closed tickets with suggestion to email admin (and I did that). Later I made new ticket (previous were closed, as I said) and asked for resolution. They asked do not open more tickets (with no responses) and promised to give answer by email. 2 weeks later still nothing fixed, nothing answered.
I decided to leave it to be safe. Just a heads up warning. But make your own decisions.
https://i.imgur.com/9Z3wD9r.png
https://i.imgur.com/s2Nn6Qc.png
Certainly looks fishy.
Generally it's always the best to move fund into wallets only you can control. All those other wallets required on the exchanges, etc., should only be used for passing-through funds to the service, IMHO.