The Klarna Payments for WooCommerce plugin can be downloaded from here.
Once installed and activated, the plugin's settings can be found in WooCommerce ⇒ Settings ⇒ Payments ⇒ Klarna Payments.
Enable Klarna Payments by checking the Enable Klarna Payments checkbox.
Test mode allows you to test your integration to ensure it is working properly before taking real orders. You can sign up for test credentials here.
Log debug messages will log plugin debug messages in WooCommerce ⇒ Status ⇒ Logs.
You can generate your Klarna API credentials in the Settings app of the Klarna Merchant Portal. These will consist of a username and password.
Once generated, enter these credentials in the Production Klarna API username and Production Klarna API password fields for the appropriate region.
If you generated test credentials following the above link, enter these in the Test Klarna API username and Test Klarna API password fields.
Make sure you click Save changes at the bottom of the page when you are finished.
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