To receive messages about bookings (notifications of new bookings, notifications of cancellations, etc.), you need to check Bookings in contact settings.
Notifications about bookings are sent to the email address specified in the hotel's Extranet contact details with an Extranet username and password. You can set up notifications to be sent to several email addresses at once.
If you want to receive text notifications, please send a request to email@example.com (in the email show the ID of the accommodation option and the phone number to which you wish to receive text notifications). The availability of this service depends on the specifics of your phone service provider.