@maykbiletti
Klarna has logic which takes into consideration things like the customers billing address, order amount, etc. when rendering the payment options.
So based on your order criteria Klarna is determining that the payment options should not be shown on the checkout page. The problem is that logic is happening in a black box and so there’s no way of knowing why the payment option is not being provided.
The merchant that opened this ticket did not have to resolve anything. There are of course many instances of Klarna working correctly because their selection criteria for the order was met and so the payment options were shown.
For example I am able to re-create the issue when I create an order that is under $100 and in USD currency. If I change the shops currency to EUR I see payment options so that tells me that Klarna is deciding to not show payment options based on something to do with USD currency.