Hey there, @magic8ball2! Thanks for contacting us. I’m happy to help you.
I checked our documentation and Klarna should work on Sweden as mentioned here.
So let’s investigate to figure out what is going on ??
Do you know exactly what error message the customer gets when the payment fails?
If you are able to provide a screenshot of it with us, that would be great.
I recommend using https://snipboard.io. You can share the direct link to the image as a response to this topic.
To confirm, the error they get is on the checkout page and the system does not create a order for it, correct?
Furthermore, I’d like to understand your site properly. Please share with us the necessary information below for us to investigate the issue further:
System Status Report which you can find via WooCommerce > Status > Get system report > Copy for support.
Fatal error logs (if any) under WooCommerce > Status > Logs. Then you can use the selector to search for Fatal Errors.
You could copy and paste your reply here or paste it via https://gist.github.com/ and send the link here.
Looking forward to your reply.
Have a wonderful day!