KlarnaSell with KlarnaMerchant SupportIntegrationIntegrating KlarnaIntegrating KlarnaIntegrating KlarnaWhat is the username and password I need to add in my platform? | How do I integrate Klarna? | How does the integration process work? | When can I start integrating Klarna? | The integration is not working. What should I do? | Why am I sent back to the shopping cart when I try to complete the purchase in the checkout?What is the username and password I need to add in my platform?How do I integrate Klarna?How does the integration process work?When can I start integrating Klarna?The integration is not working. What should I do?Why am I sent back to the shopping cart when I try to complete the purchase in the checkout?