Thank you for all your responses. This site is as i remember it, great with people helping each other. I must admit that I have felt like mining again, hehe
I saw hashnest is closed, so no way to mining again. In Spain, electricity costs so much now, 0.25€/Kw, also i saw my well aprecied colos at Cryptoboreas is closing, too, so i think i will stay out for the moment. I have 2 friends doing something with cryptos, so i will have an eye here hehe.
Thank you all!
The point is not in calculating profits or losses or others, but any platform that asks the user to deposit an amount to get another amount is considered scam.
Therefore, you should avoid these platforms because they will try to deceive you, they can update their database to indicate that you own 100 bitcoins, but unless those currencies are on the blockchain, their value is zero.
Unfortunately, social attacks increase greed as they can tell if you bought Bitcoin several years ago and forgot to make things more logical.