iCloud mail as Apple ID
Hello. I created an Apple email address and wanted to make it as my primary Apple ID address. It went well in the settings and now I can log in using @Icloud.com and my password but it continues to show the old GMAIL as Apple ID even though. On Icloud website it says:
This email cannot be used as an Apple ID at this time.
I‘ve heard it takes 30 days until you can completely replace the old third party mail for Apple ID with a new @icloud.com one. Is it so?