If you look your usergroup permission you will see "Can manage countries"
After this you will see in navbar "Countries" link
After click on it you will see button "Add country"
And after you have just to set country informations
Are you saying this plugin will break for any countries that change around the world over time?
I can not predict the geopolitical changes
And I can not predict the changes to the google database either.
That's why I added this option in order to be able to handle future cases or unplanned cases