What’s the status of the investigation of my return?

The current status or outcome of the investigation is always visible in the Klarna app:

Good to know: Submit the returns information at any time in the app – follow the prompts to enter the tracking details & the date you made the return. If after 21 days your return is not registered correctly by the store we can always support you if you provided the required returns information.

And always be sure to keep copies of your correspondence or proof of your attempts to contact the store.