To reinstate a student who has previously been dropped or denied access to your class this semester, please navigate to your course via our backup server:
https://lbtest.cns.utexas.edu/instructor/courses/
Navigate into your course
Click 'Approve Enrollments' on the left side bar
Find the student, and click 'Approve'
This will put this student on your roster, and the student will be able to see all published assignments after a short generation wait.