In order to add more domains, you need to purchase additional slots before certificate activation or reissue. The purchase is done from your SSL list >> click on Details >> click on Add more button in the Secures X of 100 domains line:
You will be redirected to the shopping cart where you will see the option to pay for additional domains. Once done, you can reissue the certificate with the extended amount of SANs.
Please keep in mind that the validity period and the price for the additional SAN (Subject Alternative Name, additional domain in the Multi-Domain certificate), ordered after the certificate purchase will not be prorated.
This means that:
- The SAN, added to the Multi-Domain certificate any time after its purchase, will cost the same price as the SAN ordered along with the Multi-Domain certificate during the initial purchase;
- The SAN will expire together with the certificate it is attached to regardless of the exact date of SAN’s purchase.