If you cannot send a credit note via the PayOne plugin, the cause is often related to the underlying payment or the installed plugin version of your main client.Checking the Credit Note RequirementsCorrect payment: Check whether the payment underlying the order for the credit note is a correct PayOne payment.Plugin version: Verify whether your main client has the latest version of the PayOne plugin installed. The event actions of the plugin relevant for the credit note always depend on the version installed in the main client.

If no PayOne payment methods are displayed at checkout, there are several standard points you should check to resolve the cause.Common checkpoints for missing payment methodsMake sure that the PayOne plugin is active and deployed in the active set.Check whether the assistant of the plugin has been fully completed.Check whether the payment methods have been enabled in the active customer group.Check whether the payment methods are not blocked in the shipping profile.

If the PayOne assistant is not showing, you should first check whether the plugin is correctly deployed and active.Check if the plugin is active and deployedCheck whether the current version of the plugin is shown in the Deployed column; if this is not the case, update the plugin and deploy the plugin set.