@Cindy Lee Welcome to the Atlassian community
You will need to follow the directions on this page https://confluence.atlassian.com/cloudkb/change-atlassian-account-email-addresses-969508513.html#:~:text=at%20any%20time%3A-,Go%20to%20id.atlassian.com%2Fmanage%2Dprofile%2F,to%20find%20the%20verification%20message. You will need to scroll down on the page and follow one of the three directions under the managed account section. You might have to try all three as I am not aware of what your setup is.
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