I invested some bitcoin in hashflare in 2018 by buying some mining power with the company, when it was time for me to withdrew my earnings, was told minimum withdrawal has been increased, I had to wait longer, after a while they said mining difficulties have increased and they terminated my contract, I had to perform some KYC and got rejected severally until I had write some messages to them before they just paid about 0.021BTC or so. The rest investment are gone. This was how genesis mining equally terminated my contract in 2017 citing mining difficulties. I stopped anything mining.