I would call them a scam based on my experience I had with them in the beginning. I thought to join them and buy 1 Terrahash because I see massive advertising campaigns in facebook, youtube , videos and description of their mining farm located in Iceland etc. It was all good the first 2.5 months and then after this time passed they shut down my contract with the following reason:

"We shut down your miner because with increasing difficulty is not profitable anymore to keep it on. You would have done the same if you had the miner in your home"

So I had a 1 year contract with them and the contract did finish right after 2.5 months passed for the above reason. This looked exactly a perfect scam trap. I learned my lesson to never join any cloud mining again no matter how legit they are.