cswebservice

Hey Femi, No, I haven’t received any further updates from Mollie support. They referred me to you on September 15th, stating that their support team cannot track individual payments. Should I have contacted them again – What should they do? What’s the current status? How can I help resolve this issue?

We contacted Mollie Support. Unfortunately, they are unable to track a specific payment with a payment ID. (My Mollie ticket ID is 2369721)

To summarize: We select “Klarna” as the payment method in WooCommerce and are then correctly redirected to Klarna. PayLater is suggested in the Klarna checkout. When we click on PayLater, an error message appears at Klarna, and the checkout is canceled. The correct behavior would be if Klarna did not display PayLater in the pre-selection.

To resolve the issue, the following questions could be clarified:

• Is this desired behavior by Klarna? If so, why?
• Is this behavior reproducible in other integrations (not WooCommerce)?
• Does Klarna need additional personal data to decide whether PayLater is permitted (such as date of birth?) < just a wild guess
• Does Mollie’s API provide all the necessary information to Klarna?
• Does WooCommerce provide all the necessary information to Mollie?

Just some ideas to go further here and solve this issue. If you need anything to test or further information, I’m happy to help. However, I can’t debug the error as it is.

Thank you for your reply. In my view, the issue is not related to webhooks, since the customer is redirected to Mollie/Klarna and the error already occurs there. This suggests that the problem happens either during the transfer from WooCommerce to Mollie, or from Mollie to Klarna.

It is correct that our webhooks are not firing properly and therefore the order is not marked as paid. I can confirm this is also an issue, but it is a separate one. Could you please explain why a broken “subpayment” method (Klarna in general works, but Klarna Pay Later does not) would be related to a webhook?

Can I provide any further details? Is there documentation on which fields and data must be transmitted so I can debug this more deeply myself?

Hello Femi,
thank you for your quick response. Please find the requested files here:

WC System Report: https://privatebin.syde.com/?cbd46600269342f4#ABQcXBn17jwdRyDCfD7CYgdVE8ZTySfsJ12tJwA7RGAC

WC Logs: https://privatebin.syde.com/?8c27d8c7740902d6#9xD7Leb7nTAW2tpqcnG19P26rNR1Z3uQZH7XLtSsBdup

I checked the log output carefully and could not identify a specific error. The payment object is created correctly, with amount, currency, returnUrl, and webhookUrl all passed as expected. However, during the Klarna checkout the flow fails with onWebhookFailed and the payment cannot be completed.

This indicates that the request reaches Klarna, but Klarna rejects it. It may be related to missing or incorrect parameters in the data being forwarded from WooCommerce/Mollie to Klarna (for example customer or billing details). Since other Klarna payment methods work without issues, it seems specific to Klarna Pay Later.

If I can help by providing further details, please let me know.

Best regards,
Christoph