If you'd like to change which email address you use to sign in and receive email communications, you can do so from your Account Settings page.
Athletes and coaches can access their Account Settings anywhere on FieldLevel by clicking the dropdown menu in the upper-right corner (next to their name/profile picture).
On the Account Settings page, you can change the email address by deleting the existing contents of the "Email" field (your previous email), entering your preferred email, and clicking the Save button.