To reset your password, click the "Forgot password?" link on app.ledgerx.com. You will receive a link to your email that will be valid for 24 hours.
Why didn't I get my reset password email?
If you haven't received an email to reset your password after a few minutes of requesting it, make sure you entered the email address you used to create your FTX US Derivatives account without any errors.
Alternatively, please check any spam or promotions folder in your email inbox.