I've run into an issue today, just received the following email....

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Why are we contacting you?
We’re following up to remind you of the importance of keeping your promotional material in line with UK Financial Promotion regulations, and how Klarna’s On-site Messaging (OSM) can help. When advertising Klarna's BNPL products you MUST follow Klarna’s Rules for your advert to be compliant with the laws around advertising credit in the UK, and therefore approved by Klarna. If you are not the decision-maker or the individual responsible for implementing our OSM tool, please forward this email to the appropriate party within your organisation immediately.
Why is this important?
Compliance not only safeguards your business from regulatory risks but also builds customer trust. With Klarna’s OSM, you can ensure that your promotions meet UK regulations without the need for custom ads.
The benefits of On-site Messaging
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Guaranteed compliance: Automatically adheres to local regulations.
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Time-saving: Eliminates the need for creating custom promotions.
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Consistency: Provides clear Klarna payment options to customers.
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Enhanced Shopping Experience: Delivers dynamic, relevant offers to your customers.
Your responsibility
When advertising Klarna's BNPL products, it's essential to comply with our advertising guidelines. Non-compliance may result in regulatory breaches if you're not FCA-authorised.
Next steps
To continue benefiting from compliant and effective promotions, please ensure you’ve implemented On-site Messaging.
 
Klarna for Business
looking on stripe it took a search for klarna in the search bar on their developers tab to get to a mini article where it states the following....

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Klarna branding
Let your customers know you accept payments with Klarna by including the Payment Method Messaging Element on your product and cart pages. You must comply with Klarna’s marketing compliance guides.

If you’re in the UK, there are FCA regulatory requirements in the UK regarding advertising Klarna’s BNPL payment methods. Failure to comply can result in criminal charges. As per these requirements, you must only advertise Klarna with messaging approved by Klarna. You can find Klarna approved messaging in Klarna’s UK Financial Promotion Rules.
I also tried klarna's website first and found that they have been messing around with code and have issues with their htaccess and cors rules that is blocking the code snippets i suppossedly need from popping up, it seems to be region specific snippets, although stripe may have made a dynamic version for their api/sdk?