no it's not that, because someone stoll my 8bit to

fuck how its possible?
I never said nothing to no one, just to set up the masternodes?

??
If someone also stole your 8bit then maybe you have a trojan and will keep stealing your coins... better be paranoid about security, scan it with spybot, malwarebytes, virus scanner etc. jsut to make sure you are clean.
If someone is actively stealing your coins you best reformat that shit ASAP. None of those scanners are going to do anything.