there is a good reason, they were lazy!
if you have checked their site in early days you could see that there has been nearly no change in their site. there were a lot of things missing, for example their API has been incomplete for ever and there is a text saying it will be added soon!!!
they never made any efforts to grow their business so they never could make any profit from it. as a result they had to shut down.
I strongly agree with you on the fact that the team behind the Coinexchange platform were lazy. This totally makes sense now. A lot of exchange platforms in the crypto space are lazy, they don't make any effort to improve their platforms.
They are among the reasons why some people find it hard to fully adopt to the use of cryptocurrencies. i don't think so, exchanges (specially altcoin exchanges) have nothing to do with adoption. simply because exchanges are only used by traders and traders can not be counted as adopters. they are here to make money (fiat) so they are only interested in fiat not bitcoin or cryptocurrencies.
the adoption is only when people start using bitcoin as it was meant to be used, meaning as a currency to pay for stuff. when merchants start accepting it as payment,...