Is there any rule about multiple accounts? I can't find anything.
as long as they don't come in contact/are logged in at the same time i think its fine
That's the point why I'm asking. Would want to use it as a private backup server.
Me being sad and that I read terms & Conditions, basically, it says that multiple accounts is bad and that means more than one account with the same IP. So you either have to share with siblings or risk losing everything.