Hello,
It seems that your site is using a multistep checkout which will not work with Klarna Checkout because this way is not the standard checkout flow WooCommerce has. Klarna Checkout is adapted to work with WooCommerce’s standard checkout flow. Maybe a solution to this problem would be to remove the extra “Attendee-registration” page and add those fields on that page directly into the checkout page using a plugin like this: https://woocommerce.com/products/woocommerce-checkout-field-editor/
Here you can find information about adding extra checkout fields to the Klarna checkout using action and filter hooks. https://docs.krokedil.com/article/146-klarna-checkout-extra-checkout-fields
Best Regards,
Kristian Andersson
