Webhooks
Webhooks are used to connect different systems. They provide a way of how they can talk with each other.
Whenever there is an update for an order, Mollie will call the webhook provided by the Mollie Plugin and notify your OXID shop about any updates, such as a payment status.
It's not necessary to configure anything to receive notifications.
However, if you are in a testing or staging environment, please make sure the testing or staging enviroment is publicly available.
If you want to create a whitelist for the IP range of Mollie, please refer to this page: https://help.mollie.com/hc/en-us/articles/213470829
