Problem in automatic activating a licences

To give a background. I move from my old mac to a new Windows 10 PC. I installed a clear windows on it. I installed some programs as github and so on. I installed unity hub because I have some could project and I need a way to see them. When I tried to enter any project it said I am missing a license. Ok, I got to Prefferences > License Mangager > Activate New License. I am using personal edition and this problem occurred on both options unde "Unity Personal". I pressed done and pop-ed up: "You're license is now activated" and another warning saying: "Machine identification is inactive forcurrent license". I used manual activation but this error still happens