Registration message keeps coming up

I am getting an annoying message come up asking me to register but when I try to do so it says:

 

"We are unable to proceed with Norton account at this time.  Please try again later."

 

I have been using this product for a while and my licence is up-to-date so I am not sure why it keeps coming up and why I cannot just do what they are asking me to do.

 

Any comments?