Can't install on mac os 10.9.x

I carefully researched before buying my daughter a macbook pro to be sure I could continue using Norton Online Family. It even plainly says this OS is compatible on https://support.norton.com/sp/en/us/home/current/solutions/kb20090416105810EN_EndUserProfile_en_us

 

However, when I log in to my account and go to add device then click on the download button, it comes up and says the device isn't supported. 

 

Which is correct? Norton Online Family won't work on a macbook pro running 10.9.x or it will? If it will, what do I need to do to get it installed?

 

Thanks in advance!

Nicole