I want to let this nation get deleted, but this computer automatically logs me in as soon as I go to the NS homepage.
How do I keep that from happening?
Go into your settings, under "Log In Automatically" click "No", then clear your cookies and log out.
That, or don't visit the NS website for 28 days. Or create another nation with autologin, and it'll log into that one instead.
I say again, this solution should be included in the Help. It happened to me, and who knows how many others.