This email address is not available - iCloud Custom Email Domain
Hi community people,
I setup my Custom Email Domain, and when creating email addresses under my Apple ID I inadvertently created an email address for another family member. Initially I had not realised that others I invited to my domain needed to create emails under their own Apple ID on their devices.
I immediately deleted the email address under my own Apple ID and several days later tried to setup the email address on my family member's device, however I get a dialogue that says "This email address is not available. Please try again with a different address".
I have verified that the email address is definitely not in use and emails sent to the address result in a delivery failure.
Has anyone experienced this, and if so is there a solution to the issue?