If the order status in Magento is not being updated, this usually indicates Magento is not receiving notifications from Adyen.
To receive notifications:
- Set up notifications in your Adyen Customer Area.
- Make sure that the Magento 2 cronjob is running on your Magento server.
- Configure the cronjob in Magento.
If the cronjob is running correctly, you see the message "Adyen HTTP Notification(s)" in the order’s comments history.
If you are still not receiving notifications, check possible causes in Magento 2 does not receive notifications.