You can update a recipient’s email address (spelled incorrectly, changed jobs, etc.) by going to the recipient section of the Store module (cloud with up arrow).
Once you find the recipient, click on their name and then click on the “change email address” button. Type in the new email. If you want to resend any certificates that have been issued to him/her, click on the “Resend Email” button for each certificate.
See help video above.