There are several ways that a learner can communicate with administrators and course contacts.

First, there is the in-app messaging feature. This can easily be accessed by clicking on the profile picture at the top right, then selecting Messages.

From there, Learners will be able to view their inbox as well as send messages to Admins.

You can also set a course contact email by navigating to your course, going to the Course Settings tab, scrolling down to Email Notifications & Reminders, and entering it in the Course Contact Email section.

This email will be displayed in your learners' course portal.