CLOUD MINER PRO LTD CloudMiner Scamming bitcoins for fake upgrades other other!!. They have a free miining service where you can make bitcoins. You can then upgrade the account by paying with your real bitcoins from a different wallet. Once you try to withdraw your mines coins, you receive nothing in your wallet. When you upgrade your account and pay using your own bitcoins, nothing happen. When you try to use their contact page, nothing happens and no-one responds.