Hello,
I started mining with CoinEx when it first came up, it had quite a few issues, slow and it didn't work as intended, however coins were still coming through, and the site did seem reputable. However: After mining ~~1k SXC I wanted to transfer this out of the site, I set my transfer for Cryptsy to sell and suddenly I noticed that my balance was minus 1k - and the notification log shows two withdrawal pending of 1k.
Fair enough.
24h later, still pending before I get a message about "Withdrawal failed", 1k coins is returned leaving me at 0SXC balance with no coins transfered. Repeated attempts to talk to support has failed.
After the site went up yesterday I got in touch with Erundook, one of their admins and he tells me that he has no recollection of any transfers or withdrawals being made. Sure enough, I check my SXC balance site, mostly wiped clean aside from two minor transfers, no track record of ever having mined 1k or it having being transfered.
Wether this is a database malfunction or not is hard to say, I do know that I am not alone, the exact same issue has been reported by alot of "players" in the Chatbox aswell. It would be easy to "claim" hardware or database malfunction, but it could actual be that aswell, a database malfunction.
In either case I would not use the site again in fear of loosing something worth serious money, that being said, 1k sxc isn't unnoticable cash for me. Meh.
http://imgur.com/6WAwsAu