To reset your Ancestry® password, follow these steps:(Ancestry Support)

1. Visit the Ancestry Sign-In page.
2. Click on “Don’t know your password?” beneath the login fields.
3. Enter the email address associated with your Ancestry account and click Continue.
4. Check your email inbox (and spam/junk folder) for a message from Ancestry containing a password reset link.
5. Click the link in the email to open the password reset page.
6. Enter your new password in both the New Password and Confirm Password fields, then click Continue to finalize the reset.(Ancestry Support, JustAnswer)

If you don’t receive the reset email, ensure that you’ve entered the correct email address associated with your account. Sometimes, users have multiple accounts or may have used a different email during registration. Also, verify that the email didn’t land in your spam or junk folder. (Reddit)