FAQ

Mollie payment plugin frequently asked questions.

1. Where to take test bank card numbers to verify test mode?

Request Sandbox mode from Unzer, add API keys and use Test card numbers.

2. The payment is successful in Unzer, but shows a pending status in VirtueMart

There might be the following reasons:

2.1. Some payment methods require additional time to process. Once the payment is completed, Unzer will trigger a webhook to automatically update the order status in VirtueMart.

2.2. The reason why status was not changed may be related to the Public Key which is using for updating order statuses in live mode via webhooks (Gateway notifications). The Public Key might be incorrect or missing in the Unzer Payment Method settings in VirtueMart. Please verify it and make sure the correct value is entered.

2.3. A security extension installed on your Joomla site is blocking webhook calls from the Unzer server. As a result, the webhook does not receive the necessary information, and the order status remains "Pending." Please check if any security extensions are installed (e.g., RSFirewall!, Admin Tools, etc.), review their configurations, and contact the extension developer for further assistance.

We recommend to enable debug in payment method options to see whether webhooks are delivered and processed.

3. How to enable additional payment methods?

The actual list of available integrations can be checked at the Unzer Payment Methods page. The list of available methods can be changed. Please check out the official page to get actual information.

4. "Total amount does not match! Please contact our shop support" - what does it mean and how to fix it?

In some cases, your client can get the following error: Total amount does not match! Please contact our shop support.

When the parameter 'Send Order Items' is set to 'Yes' there can be a difference between cart total amount and payment method total amount due to a rounding in order items calculation. In this case enable the debug in payment method options to log the incorrect values and contact us on the support forum.