From what I've read (sorry no sources), this is a rougue operation, and it's best to stay away. Funds might be lost. The dude running it is a scammer or highly incompetent. I would think the first is a more plausible explanation. There's been some thread on reddit regarding this.
Nothing of rogue or scam. Pure rumours. Even after Kapiton had stopped accepting deposits I still sent money because I new my deposit code. It took a bit longer than usual but it got deposited eventually. In December the withdraw of bitcoin was taking weeks. Now 3 months on looks like the website has been abandoned.