I'm trying to change my iCloud account alias email address, but I couldn't find any way to do it.
As you can see below, this account's Apple ID is firstname.lastname@example.org and it's alias email is email@example.com. I'd like to change the actual alias email to firstname.lastname@example.org, so it has the same name as Apple ID.
I've already tried to go on Edit, but it only allows me to change the Apple ID (main email) and an option to add more emails. Nothing regarding the iCloud email, such as deleting it and creating another one.
Is there any way to achieve the desired?
Thank in advance,