the site is a scam like most of cloud mining sites. As they are they offer you a free hashrate to register then when withdrawal reach threshold they force you to make a purchase to attempt to withdraw and once you make a purchase they will withdraw the amount that you already reached while you already purchased more than what you withdraw already, and on your next withdraw when you reach threshold they will put a restriction in different way as NICE-MINER.com add the message that EU regulations request a total of 300 GH/s to make a withdrawal. Some sites like hashing24.com will till you that the mined coins has less income to pay for electricity as electricity price goes high and then you will find your self with a minus balance and they will till you, You have to pay your electricity fees which reaches by minus already or all your contracts will be terminated I lost a like 3 contracts equalivant to 50$ with them. Bentalefin.com also I bought 58 GH/s for 10$ and then when I reached pay threshold I request a payout of 1$ and it took like a whole week for my payment to be in my account and unfortunately I've 3$ which is unpayable due to I'am not on the VIP list that also related to the same SCAM idea in all cloud-mining websites which required a deposit of 2500$. Genesis Mining also done me the same in different way even my account was suspended and when I try to login my account was deleted and with out any record. Cloud flare also I bought some GHٍ/s with a credit card but my payment never been accepted by the website and at least got it back as the payment was rejected. nicehash.com also I've deposited some BTC and unfortunately they returned back to me in a couple of minutes. Even though their FAQ'S can be changed in like seconds.
but still there are some good developers out there some good people with real good services to cloud mine.
Also if want to mine rent rigs and mine to your own pool or a pool you participate on, when renting rigs is with no risks at all as you mining on your pool. You can rent rigs from different places but here my recommendation for best renting services you can get
eBay.com just right on the website mining contract and find contract to hire to your pool