Notifications are managed via your Merchant Back Office.
To access the notification rule management, open the menu: Settings > Notification rules.
Notification types are displayed according to the store options and rights associated with the logged in user.
There is a tab for each type of notification:
Instant Payment Notification URL call SMS sent to the merchant SMS sent to the buyer E-mail sent to the merchant E-mail sent to the buyer
Our documentation site provides detailed guidance on how to configure and enable rules for each type of notification.