Customisations are gone
First, make sure that you're signed in to Google News when you make your customisations and when you want to view your customised edition.
If your personalised Google News edition was for another country, you'll need to view that specific edition.
If you're on the correct country edition but your personalisations aren't showing, you've probably used the wrong login. If you recently renamed a conflicting account, you may need to use the new username to sign in.
You can also try recreating your Google News settings in your account.