This is how you can connect Storeshop and Klarna.

Click on this link to create a Klarna account: https://www.klarna.com/no/bedrift/

When you get to "What platform are you on?", select "Other integration solutions". 

Then you select "Own built integration". Then you choose "Klarna checkout". 

Now that you have made a Klarna account, or you already have one:

Go to settings --> "Klarna API Credentials". 

Click "Generate new Klarna API credentials". 

Copy the username and password, and go to your Storeshop control panel.

In Storeshop, go to Settings --> General. 

Click on "Activate B2C Webshop". Enter your username and password, and press "test connection".