Mining on cryptocurrency.

[robelneo]

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 cloud mining to lure you to pay for premium and have better mining reward, but those are not real bitcoin, they are just numbers represented on the cloud mining sites. Which means you will not be able to withdraw as they are in control and they are not legit. As the free part of cloud mining is even having high reward compared to what bitcoin mining is today, you should know that they are scammers that only just want you to go for premium version inorder to scam you.

I get it cause their was one of the mining i was ask to pay certain amount before I could withdraw. But later on I find out that their was no way again to login.

Whether you pay for a plan or you're using a free hash that they've given just to join, you cannot withdraw your earnings unless you are a promoter and you keep people coming as your referrals, their model is like a Ponzi scheme they will let you withdraw from the start as long as you keep referring people but if you are not referring but invested in one of their plans they will let you withdraw as long as your withdrawal is not equal on of the amount you withdraw and if they just starting out their platform because they know once you withdraw they know that you will refer people or will increase your investment.

[virasog]

Please I as answers to these questions.
   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.

It seems like you are referring to cloud mining here and most of them are scams. The newly developed cloud mining sites might give you some withdrawal as they need to develop some reputation to gain more customers before they scam.
So, do not try to research much about cloud mining, you will only end up losing your money and time.

Real mining is only done physically with a proper hardware setup which is not so easy to configure and also involves a lot of costs.