Keep getting false positive for my website

I keep getting a false positive for my website which is for a 501c3.  This website tests safe in every web security system except Norton.  On the PC's I don't have Norton installed, I have no issue.  I've been working on this with Norton Help for over 4 months and still cannot get a clear resolution.  I feel I must end my years and years of Norton use and go to something else.  Very, very frustrated.  I'm caught in a loop and cannot get out.  Does anyone have an answer?