Stripe Payment element - null payment method - urgent

Our live payments are not being processed. In the webhook log, I see:

"payment_method": null,

and then

"payment_method_types": [
"card","klarna",
],"processing": null,"receipt_email": null,"review": null,"setup_future_usage": null,"shipping": null,"source": null,"statement_descriptor": null,"statement_descriptor_suffix": "Our Shop Name","status": "requires_payment_method","transfer_data": null,"transfer_group": null,

in the plugin config, whe set "Authorize and capture"

What could be happening?

What nopcommerce version do you use?
Do you use the native checkout or external plugin?
What payment methods did you enable on the plugin configure page?

Support wrote:

nop version 4.60.5, and I'm using Stripe Payment element along with your Simple Checkout plugin (both have been bought and activated with a license, order n.43613). The configured payment methods for now are card and klarna.

Here's the (partially redacted) log file of the last order:

----

StripeDirectLibrary widgetZone=order_summary_cart_footer, orderTotal=1,00
2025.10.14 16:13:42:8660*******
PrepareStripePaymentIntentRequest (changed) currency=EUR, orderAmount=1,00
2025.10.14 16:13:43:2988*******
CreatePaymentIntentStandardProduct paymentIntent key=--redacted--, json={
  "id": "--redacted--",
  "object": "payment_intent",
  "amount": 100,
  "amount_capturable": 0,
  "amount_details": {
    "tip": {
      "amount": 0
    }
  },
  "amount_received": 0,
  "application": null,
  "application_fee_amount": null,
  "automatic_payment_methods": null,
  "canceled_at": null,
  "cancellation_reason": null,
  "capture_method": "manual",
  "client_secret": "--redacted--_secret_U0uE8NuTvc44GuqVWQsVQUQAj",
  "confirmation_method": "automatic",
  "created": 1760451223,
  "currency": "eur",
  "customer": "cus_TEbsfiLGIcQmA6",
  "description": "--redacted--",
  "invoice": null,
  "last_payment_error": null,
  "latest_charge": null,
  "livemode": true,
  "metadata": {
    "OrderGuid": "3056f04c-aa4f-4ccc-97ad-4db2143f9133"
  },
  "next_action": null,
  "on_behalf_of": null,
  "payment_method": null,
  "payment_method_configuration_details": null,
  "payment_method_options": {
    "acss_debit": null,
    "affirm": null,
    "afterpay_clearpay": null,
    "alipay": null,
    "au_becs_debit": null,
    "bacs_debit": null,
    "bancontact": null,
    "blik": null,
    "boleto": null,
    "card": {
      "capture_method": null,
      "installments": null,
      "mandate_options": null,
      "network": null,
      "request_extended_authorization": null,
      "request_incremental_authorization": null,
      "request_multicapture": null,
      "request_overcapture": null,
      "request_three_d_secure": "automatic",
      "require_cvc_recollection": false,
      "setup_future_usage": null,
      "statement_descriptor_suffix_kana": null,
      "statement_descriptor_suffix_kanji": null
    },
    "card_present": null,
    "cashapp": null,
    "customer_balance": null,
    "eps": null,
    "fpx": null,
    "giropay": null,
    "grabpay": null,
    "ideal": null,
    "interac_present": null,
    "klarna": {
      "capture_method": null,
      "preferred_locale": null,
      "setup_future_usage": null
    },
    "konbini": null,
    "link": null,
    "mobilepay": null,
    "oxxo": null,
    "p24": null,
    "paynow": null,
    "paypal": null,
    "pix": null,
    "promptpay": null,
    "revolut_pay": null,
    "sepa_debit": null,
    "sofort": null,
    "swish": null,
    "us_bank_account": null,
    "wechat_pay": null,
    "zip": null
  },
  "payment_method_types": [
    "card",
    "klarna"
  ],
  "processing": null,
  "receipt_email": "--redacted--",
  "review": null,
  "setup_future_usage": "off_session",
  "shipping": null,
  "source": null,
  "statement_descriptor": null,
  "statement_descriptor_suffix": "--redacted--",
  "status": "requires_payment_method",
  "transfer_data": null,
  "transfer_group": null
}
2025.10.14 16:13:43:6247*******
StripeDirectPaymentViewComponent. Invoke.
  controller=SimpleCheckout, action=AjaxPaymentInfo
  ClientSecret=--redacted--_secret_U0uE8NuTvc44GuqVWQsVQUQAj
  billingAddress.Id=145
  FirstName+LastName=--redacted--
  City=roma
  Address1=via della via
  Address2=
  ZipPostalCode=00182
  Country=Italia
  Country.TwoLetterIsoCode=IT
  StateProvince=Roma
  shippingAddress.Id=375
  FirstName+LastName=--redacte

Hold on! I found an error in my simple checkout template, it works now!

Awesome.

Sorry another semi-related question: when using the sandbox mode, I was able to see the klarna message "3 interest-free payments of -- with Klarna" where I configured it (in the product detail and in the cart page), but now in live mode the message has disappeared and the payment with klarna is no longer in 3 installments but in full. Do I have to configure something specific on my stripe dashboard? I didn't find such options in stripe's payment methods config...

I don't know.
Stripe accounts is linked with the klarna account.
Could you ask the Stripe support team?