NIS, Norton Security, Norton Security Deluxe, what's next

I'm a Norton user since 2006 and mainly happy with the product and protection. I Always bought a Retail box of the product in a store (online or brick and mortar). It is ridiculous that it's cheaper to buy a box. The online renewal is always more expensive. OK no problem, I bought a box and installed it "clean" for many years. (first with Hotmail account, last year with a newly made Norton account)

I used Norton Internet Security. It is changed by name. OK no problem, we call it Norton Security now. A year ago there were problems with TrueCrypt. I couldn't use it for months. I didn't complain in this forum an topic. I was in "lurk mode". But I Always keep a tab on this forum. I didn't get any extra days because i didn't complain in the TrueCrypt-crash topic. OK no problem, my bad, I should have complaint in it.

Three or four months ago I noticed the ID safe didn't work in my favorite browser Firefox. Firefox had changed massively. The was a major overhaul necessary for the Norton toolbar to get it working again. Norton is still working on it. OK no problem, I have internet explorer as fall back browser. I can use the toolbar and ID safe in that browser if necessary.

A couple of months ago I saw Norton Security changed its name again. OK no problem, we call it Norton Security Deluxe. So I bought a box (deluxe) in an online store. It was cheap and the online store stated on the webpage you can use the product key in the box to extend the subscription without losing days. Great!

Today I had six days left for Norton Security version 22.5.5.15. I was sick of the notifications and hit the renew button. In Dutch it says "verlengen". That means "extend". then "I have a key or code to enter" and I entered the key from the Norton Security Deluxe box. I was thinking I wouldn't lose the six days because I was extending the subscription. Guess what: I lost the six days! In my Norton account I noticed it is added as a second product next to Norton Security (from past year).

The funny thing is that when I hit the LiveUpdate button, my computer downloaded a new engine: 22.6.0.142. And I had to restart the computer. It is now running Norton Security (no deluxe in the control pane) version 22.6.0.142.

I noticed a new topic while I am typing this post. No phased manner and for English users first anymore? It is available for all languages. What a coincidence! I think my computer was one of the first to download the new version.

Another funny thing: I had five computers on Norton Security. Now I still have five computers on Norton Security. But only one machine is running with the latest product key. What about the other four machines?

So my question is: In the Norton account there is an option to change the key for the other computers. Do I have to change the key four times from within the Norton account or do I have to enter the new key on ever computer separately??