I really don't understand, it's already 2019 and people are still believing that cloud mining is still one way to earn and the best way to invest your money??? *face-palm*..
Actually it was not scam, but when the mining fee got higher and the price of bitcoin getting down.. So yeah..
I got like 3 times of my investment back in 2017 on hashflare.
But now, every cloud mining are almost scam

Probably the year 2017 was very memorable to everyone because obviously, we make tons of money because of the massive bull-run and then cloud mining became hit as well. So that time those cloud mining are already running a scam, but due to the conditions of the market, it was not evident. But as time goes by plus the market condition worsen, those cloud mining was unmasked and evidently, they are exposed as purely scams and ponzi schemes.