Norton 360 - Not installing on my iMac

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Issue abstract:hi am trying to install Norton 360 onto an iMac

Detailed description: Getting error when installing . Product installs ok then restart. When it restarts and I open the app it just hanging at this connecting to Norton server screen (photo). I then login to my Norton account and I can seee that it’s not installed on the iMac, very frustrating

Product & version number: : iMac Version: OS X El Capitan v 10.11.6

OS details:

What is the error message you are seeing?See photo

If you have any supporting screenshots, please add them:Added 2 photos, one showing that the app is installed, second one showing the error