Klarna Checkout – Known compatibility issues

Here we gather the plugins that have known compatibility issues with Klarna Checkout for WooCommerce. This document will be updated if/when needed and it's our goal that the list will shorten rather than expand.

Some of the plugins listed below may have a solution; others unfortunately do not. We always try to make our plugins compatible with as many other plugins and set-ups as possible, but depending on code outside of our control in other plugins, we can not always enable compatibility.

CartFlows

Error: Customer never reaches order-received page.

Elementor Pro

Error: Oops

Oops.
It looks like an important part of the checkout experience failed to load and we are unable to offer you a way to pay right now.
Please refresh the page to try again. If this isn't the first time you've seen this message then there may be a more permanent error and you should contact customer service at Klarna.com.

Solution: Then you need to check if you are using the [woocommerce_checkout] shortcode in a regular text widget in Elementor? If you do, you need to use the Elementor shortcode widget or their checkout site page. Elementor does not allow you to run shortcodes in the regular text widget for security reasons.

Note: This is a known issue with the Elementor Page Builder, but could also apply to other Page Builders

Germanized & Germanized PRO

- Conclusion of Contract (PRO-feature)
It is a known issue that enabling Conclusion of Contract in Germanized's Manual contract option will result in Klarna's confirmation page being missing after a customer completes a purchase in Klarna Checkout and Klarna Payments.

- Multistep (PRO-feature)
Germanized's multistep feature may cause Klarna Checkout to misbehave or be missing altogether as a payment method.

German Market

- Confirm & Place Order Page
If this feature is activated, clicking Buy now to complete the purchase on the checkout page, the customer will be redirected to a confirmation page where they're asked to accept terms and conditions and make sure their billing and shipping information is correct before they can proceed to completing the order. Clicking on the button Place binding order to complete the order will redirect the merchant to the checkout page again. This is repeated forever, trapping the customer in a pay-confirm loop.

- Deactivate German Market Hooks
If this feature is activated it will inject an additional checkbox for terms and condition at the top of the frame. It does not break Klarna Checkout but is more a visual error.

- Add-on: Temporary Tax Reduction
Error: Bad value: order_lines[0].total_tax_amount
Solution: Use the standard WooCommerce tax options to add the new temporary tax instead during the temporary time. Klarna has more controls when it comes to order amounts and item lines on the orders to make sure that everything is correct and to be able to show the correct information on invoices sent to your customers, compared to other payment methods. This makes it so changes to these numbers can be very hard to get right. We will always recommend that you use the WooCommerce standard functionality to setup taxes, since changing these numbers can have a big effect on the end result of the calculations that we need to do.

Shopable Social Media Galleries

Error: Specific settings in the plugin can change the URL expected when the order is created in WooCommerce and the plugin should respond on the JS validation event to Klarna. In this sequence the KCO plugin listens for a hash-change, but with Shopable Social Media Galleries the url changes from /#klarna-success= to /#/klarna-success=, removing the possibility for the KCO plugin to detect the hash-change.

WooCommerce Blocks

Error: I can not see the Klarna Checkout payment way in the checkout and I'm using WooCommerce Blocks and their Checkout Design Widget.
Solution: WooCommerce Blocks got a Checkout Design Widget that is causing this as it is ONLY compatible with these payment gateways. The solution is to use the shortcode widget instead and use the standard WooCommerce shortcode [woocommerce_checkout]

WOOF WooCommerce Product Filters

Error: For some reason the product filter script runs on the checkout, and because an anchor tag / link is used to produce the 3DS bank authorization form, it causes the checkout to reload.
Solution: Within the plugin, go to Advanced, then scroll down to Init plugin on the next site pages only (this allows you to list the site pages where you want the script to run. Leaving it empty means the script runs on all pages). Enter one URL per row. Click Save changes.

WooCommerce Shipping Calculator

Error: The postal code I entered in the shipping calculator on the cart page doesn't match the postal code in the Klarna frame, or if I change the postal code in the Klarna frame, the shipping calculator is still showing the old postal code.

Solution: This happens when you've enabled the WooCommerce's shipping calculator option and is showing shipping methods (embedded) in the Klarna frame. You must disable one of them.