Klarna Checkout error (Unauthorized).

Hi there,

I tried setting up woocommerce today with stripe.
Everything went well and the first test-purchase came through.
After that things kinda went wrong. I don’t know what happened but now every time I click on ‘Checkout’ I get the error mentioned in the title.
I checked and Klarna Checkout isn’t enabled and I also haven’t got any other plugins from klarna.

I hope you can help me with this.