These guys do not reply to their support email requests. There are complaints all over the web about them not paying and this has now happened to me too so I know it's true. Paying out sometimes is not good enough, They are not reliable and not worth the time. Unless you like the excitement of ...
This is a scam, withdraw does not work. A friend of mine had the same thing happen. The free one never gets enough to withdraw anyway, but if you buy a miner it will not pay out.