After sending the cv you will receive an e-mail to do an easy logical reasoning test as a next step.
This test is about a dot play to choose the right dot-image to complete the "sentences". During the test you don't get an information if you're right or wrong. So the result is a secret. After that you will get an unpersonell info about you loose or win an job-interview at Klarna. If you loose, Klarna recommend not to apply again for the next 12 month.
My recommendation: please play with dots before you apply at Klarna.