Well I can say definetly scam. I traded from bittrex to coinexchange.io some LMC coins (477 coins)
On their website they say they will accept the coins after 20 confirmations. I have right now 257 from LMC blockchains but on my coinexchange deposit still nothing appears. Not even mentioned.
It passed 10hours and they still did not answered me or help me and meanwhile I'm loosing money...Well it's definetly so so bad.

https://coinexchangeio.freshdesk.com/support/tickets/39155