Can not change Apple Account (formerly Apple ID) email address (iOS 18.1)

Having issue with changing the icloud.com/me.com email address (which was my original Apple ID.

Receiving error:

"Could not connect to iCloud: Error Description not available"

I have don't this with another Apple Account/Apple ID without issue on a second device.

Cheers,

Can not change Apple Account (formerly Apple ID) email address (iOS 18.1)
 
 
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