You can find your password on your confirmation email from previous Anime Centrals. If you cannot find your previous confirmation email, and have already registered for this year's Anime Central, you can use the link In the Registration Service Center (2024) to request a new password. If you have not registered for Anime Central yet year, you can use the link on the registration form (2024).
If you are still having trouble finding your password, submit a support ticket or email registration@acen.org.