When trying to purchase SSL certificate though store, an error occurs on step #3 - Configuration:
--->8--- The following fields are not correctly completed - The validator mail address must be one of the following - admin@DOMAIN.TLD - root@DOMAIN.TLD - postmaster@DOMAIN.TLD ---8<---
The problem is caused by invalid approver email specified on page #3 Configuration:
--->8--- Common Name (domain name): DOMAIN.TLD Approver Email Address: SOME@OTHER.ADDRESS ---8<---
Issuer of SSL certificate requires approver email be one of the following: admin@DOMAIN.TLD, root@DOMAIN.TLD or postmaster@DOMAIN.TLD
Use one of suggested email addresses as Approver Email Address.