Re: [ANN] {CredenceCoin} - CRDNC - Lending-Staking-Referrals-Mining
CoinExchange.io registration is broken! That is the problem most likely. At least I was not able to register there because confirmation link lead to http 404 
Wrote them support ticket
Can't register too on that exchange. I contacted the support now and i'm waiting for reply. There might be also a maintenance or server issues going on. We must wait until it get backs online. Wrote them support ticket