Klarna On‑Site Messaging

I don't leave negative reviews often, but after this experience I think other Shopify merchants deserve the warning.

I've spent weeks trying to get Klarna connected to my store. Shopify support confirmed my Merchant ID is valid and active on their end, so the problem sits with Klarna's own integration. The app fails to connect with an error every time.

Every time I've contacted Klarna support, the response has been automated: a bot sending links to generic setup documentation. None of it addresses a connection error with an already-confirmed Merchant ID, because it's all written for someone setting up the app for the first time, not someone whose setup is already failing. I've explained this repeatedly and gotten the same doc links back each time. No human has actually looked at the error.

So now I'm stuck in a loop: Shopify says the integration is Klarna's to fix, and Klarna's support system won't route me to a person who can fix it. Weeks in, still unresolved, still no reply from an actual human being.

If you're considering Klarna for your store, know that the moment something doesn't work as expected, you're on your own with a chatbot. I wouldn't build a checkout dependency on a payment provider whose support layer can't handle a problem that isn't in their FAQ.

As a PM in my past life, I have a theory that this app was intentionally designed to fail. It doesn't make sense.

UPDATE:
Since writing the review below, I have now had further communication and a solution from Klarna. The app was installed twice; once within Shopify, and again within the Klarna Portal. No idea how or why that happened as they appear as one and the same to thing to a new user with no previous experience, but this was causing my issue. I was contacted by Nicole from Klarna support after reading my review below. I'm glad it is sorted but frustrated that I had to waste time with 2 agents over chat, (who did not give a solution) and then write a review, just to get the help required. It was actually very simple to fix if only you knew it was an issue in the first place. But I appreciate Nicole reaching out and taking the time to understand the problem, and following up with clear instructions that resolved my problem.
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As others have reported, there is clearly an issue with this app and Shopify. I've followed all instructions and still can not get the thing working. When support eventually respond, it's a standard robotic line of 'we can see you have successfully connected your store...' - Which is true, but it is not displaying the Klarna on site-messaging, and therefore it is not working. No assistance, you just get pointed you back to the instructions.
very disappointing service from what should be a great solution.

And please do not reply stating it's working, its not. It's connected, but not working.