With the upcoming change from the Symantec PKI to the Digicert PKI the feature to change the approver email address for domain validated SSL certificates of the Symantec brands is temporarily disabled by Symantec since November 30.
This affects the SSL certificates GeoTrust QuickSSL Premium, RapidSSL, RapidSSL Wildcard, and Thawte SSL123.
According to our knowledge, this important feature shall be available again within two months after the PKI change has been processed. However, it might also be that it will not be disabled at all. We will inform you as soon as we have an update on this topic.