You can make administrative updates to your MyJSTOR account, such as email changes or password updates, by selecting “My Profile” from the MyJSTOR drop-down menu in the top-center of the screen. The only exception is your MyJSTOR username. Once you create an account, the username cannot be updated.
Deleting Your Account
If you would like to delete your MyJSTOR account for any reason, please contact JSTOR Support with your request.