Learner Issues

I expected a learner to have been assigned training but they did not receive the assignment.
A learner has been assigned the same training more than once.
A learner hasn't received a notification email that they should have.
The training link a learner received via email has expired.
A learner has received a campaign notification email but after logging in the assignment is not there.
A learner says they finished training but they are still getting reminder emails.
A learner is getting an error when they try to re-launch an assignment from our LMS that they had previously accessed.