PROBLEMS w/Norton Family

To start off I had to go this route as I can't chat, why have a feature that doesn't work?  I'm not paying to call so I have to do this.  I have had Norton Family for years, been having problems lately.  Trying to un-install and re-install to add my computer back as device my daughter uses but it "won't un-install".  It won't take my sign on which is correct.  How can I get it fixed???