ah, I think I know why the game did not work, if my memory serves me right.
The game I bought was Brand new, still in its plastic cover ect, when initially setting up the game I entered my e-mail address slightly incorect, so when weeks later I decided to update it ect, I went about setting up a stardock account ect, but i had difficulties, and the reason that I was advised the Serial has already been used was because of my initial error in mistyping my e-mail address.
also I think the reason I have 1982 after my name, is that when I set it up originally it was just moppy or neomoppy (like I normally use) and registered to the incorect e-mail address with the serial number.
I cannot remeber the log on details of the other account (moppy/neomoppy) and cannot remember my log on details for my Stardock account with this (moppy1982)
This is going to cuase me problems still in the future.
Please read this
https://forums.galciv2.com/?forumid=162&aid=147722#1161785
If the above is the case could stardock let me set up a breand new stardock account, and issue the serial number to my new account.
P.S i am not really very computer ltterate so I hope this makes sense.