Just for your information:

They use a primitive psychological scheme. First, they show you the money, then they promise that you can withdraw it, but at the last moment something goes wrong. Here they are, just stretch out your hand. You just need to pay for the "upgrade".

They explain it this way: "Our system has detected 2 free BitMiner V1.0 accounts on your IP address. You can only have one free account at a time! You need to upgrade your BitMiner to make withdrawals. Withdrawals for premium accounts are not limited."

But it's just a lie. Don't be fools!