Who has been mining any cryptocurrency and have succeded in withdrawing his money, cause I have minied so many cryptocurrency for past years and presently now, but has not have access in withdrawal.
Cloud mining are scam as NeuroticFish posted already. Either free to lure you to pay for premium and have better mining reward, but those are not real bitcoin, that are just numbers represented on the cloud mining sites. Which means you may not be able to withdraw. As the free mining is even having high reward compared to what bitcoin mining is today, you should know that they are scam.