As an Account Owner or Program Manager, you are able to change or edit a recommender's email address.
To do so, click on an application and then navigate to the Documentation tab. From here you will see a box with the recommender's email listed. If the email request has been sent within the last 12 hours, you are able to update the email address and then send a new email. If the email request was recently sent, you'll need to come back when the 12-hour window passes.