Can't change Apple ID
I created my Apple account under a Gmail address. Yesterday I created an iCloud email address through my Apple account so it was associated with my account already. Currently it is a secondary alias. I would like to make it the primary alias and remove my Gmail address entirely.
When I try to do so I get a message saying "This email address cannot be used as an Apple ID at this time."
Is there a reason I can't change my email right now?
Any feedback is appreciated.