Licence use and cuestions

have a scrinever licence i buy it two weeks ago . I am professor and have a bussines in education. I have a education licence, I copy paste the data of my licence at the end of mensaje. I am windows user. My cuestions .

Can i upgrade to scrivener 3 for free?

I have a cousin who studies in my university and another familiar. 1 Familiar lives in another house diferent from my house, he lives two corners near from my house and the other familiar lives in spain. Can i share my licence whith they?