Unable to update Apple ID
I use a gmail address as my Apple ID. I recently made an icloud address using my mac. Now I wanted to change my Apple ID to my icloud address today.
I found these official instructions.
Change your Apple ID - Apple Support
I did whatever was mentioned there. I signed out Apple ID on my mac. I don't have any other apple device. And I went to the apple ID site to make the change but it only gives me the following error.
Your Apple ID cannot be updated at this time. Please try again later.
If that matters, yes my icloud address is added as secondary address for my Apple account and I can login using this address. But I want this as my primary address not the gmail one. I have tried changing multiple times but nothing happens other than that error. Please help!
MacBook Air, macOS High Sierra (10.13.1)