Only CDI staff can update a user's name on behalf of an instructor. Because learner accounts are tied to their email address, deleting and re-adding a learner with the same email will simply restore the information already associated with that account.
Learners can easily update their name by visiting the "Account" page after signing in.
If you need a name updated, you can either advise your student to update it, or please contact support and we’ll be happy to take care of it for you.