update apple ID settings
I have an iphone 6 with latest OS. As my Internet Service provider changed names my old AppleID (***) was changed (***) and became defunct and longer exists. Since then and currently the iPhone works just fine.
About a week or two ago a settings notification appeared for Update Apple ID settings and when I checked it it says
Update Apple ID Settings
Some account services require you to sign in again.
When I press the Continue button it asks for the the password, but for the old AppleID (***), which no longer exists. I understand that whilst it no longer physically exists it is retained by apple in the records.
My iPhone is not locked and runs happily on the new appleID but no matter what I do I am unable to remove the notification. I am also unable to recreate as the IS provider no longer exists. I also restored factory settings and restored old backup and this too did not work. Also the e-mail address is not listed as one of my preffered e-mail addresses.
Please advise how I may remove the notification ?
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iPhone 6s, iOS 12.1