New update ruined my shipping

You don’t need to add extra rules with code like you used to. Now you can add MULTIPLE flat rates to the zone and give each a different name and cost.

Docs are here https://docs.woothemes.com/document/setting-up-shipping-zones/

But I don’t need multiple zones. I only need the “rest of the world”, because we only ship in Denmark.. So it’ll be universal rules.

Right; so add multiple RATES (flat rates) to the 1 zone ??

Even better, create a zone for Denmark for your rates, and add no rates to ‘rest of the world’ at all.