The next step is to configure the rules required to display Klarna on your checkout, for this go to Payment Conditions tab and click on + as seen in the image below
A list of all available payment methods will be displayed. Select Klarna to add it to your checkout and access the configuration of the payment method.
The first step to enable the payment method is to activate it by changing the Status from Inactive to Active
After this, select Klarna affiliation from the drop down menu “Process with affiliation” and Save your changes
Note that in case of configuring Klarna payment method via Adyen gateway, in this step you should select Adyen gateway and not Klarna