> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://wiki.kardena.de/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# The payment isn’t working or has been declined

# Payment not working or has been declined

Was your payment in the Kardena online shop unsuccessful or declined?

There may be various reasons for this.

## 1. Check your payment details

First, check that all the payment details you have entered are correct.

Pay particular attention to:

* Card number
* Expiry date
* Security code
* Billing address
* Any required confirmations

## 2. Complete payment authorisation

Some payment methods require additional confirmation.

This may be done, for example, via:

* Banking app
* Credit card app
* SMS
* 3D Secure process

Make sure that you have completed the confirmation process in full.

## 3. Payment is declined by the payment provider

A payment may be declined, for example, due to security checks, limits or settings applied by the payment provider.

> ℹ️ **Note:**
> Kardena does not necessarily receive information about the exact reason for a declined payment.

If necessary, contact your bank or the payment service provider you used.

## 4. Use another payment method

If a payment method still does not work, you can select a different payment method, if available.

## 5. Is the order still there?

After a payment error, first check your emails or customer account before placing the order again.

This will help you avoid accidental duplicate orders.

> ⚠️ **Important:**
> Do not place the same order several times in a row without first checking whether a successful order has already been placed.

## Contact support

If you are not sure whether your order was successful, contact our support team.

> 🔐 **Security notice:**
> Never send full credit card numbers, card security codes, passwords or online banking login details.