In order to test against the playground environment, please use the following base url: https://login.playground.klarna.com.
You can trigger the consent screen in various ways depending on the environment and integration type.
Open Klarna app and go to Profile -> Security and privacy -> Data sharing and revoke consent.
If you're using the Klarna Web SDK, add the following query parameter to the URL where the 'Sign in with Klarna' button is loaded: klarna-auth-prompt=consent.
For those using the Identity platform or integrating directly with the API, the simplest approach is to create a new Klarna user account by using a different phone number or email address during login.