My email address now is firstname.lastname@example.org.
There are places to fill in your new passcode but can find no place to change email address. Thank you
To change your email address you will need to be in Settings which can be found by going to your name in the upper right hand corner of Family Search (after you sign in). One you are there scroll down and you will see where you can change your email address.
This link will give you complete instructions. It can be found in the Help center and then Family Tree. In the search bar you can type change email address or click on the link above for full instructions.
Thank you Family Search