Unable to change/delete the notification email in Apple Account

don't work for me. I get the exact same message and no way to "continue in other device"

Go to Settings > [your name] > Sign-In & Security. Under Email & Phone Numbers, click Edit (top right). Click the delete button (on the left) of the email which is your Apple ID (should be the one on the top). It's going to ask you to select a new Apple ID before deleting your current one.

I see, thanks for the clarification. It seems that you might only be able to do it on a desktop.