You can find the length of access (in months) for your course on the Licenses tab of your course. Students have access to the course for that period of time from the time they enrolled in your course in Edfinity. If you need a longer term length, please email support@edfinity.com
You can check when a specific student's access expires by clicking on their name on the Students tab course. You will see "Access valid through [DATE]".
Here are instructions for students to follow if they need more than one term of access to a course: https://edfinity.zendesk.com/hc/en-us/articles/360045287892-Can-student-access-to-a-course-be-extended-