Please visit the Academic Outreach and Innovation (AOI) Portal to contact support for assistance with restoring or undeleting a Canvas course.
You will need to provide the Course ID in the ticket.
Finding the Course ID
The Course ID is the number found at the end of the browser URL of a page view in the deleted course.
As an example, for the URL https://wsu.instructure.com/courses/1332554, the course ID is 1332554.