If have forgotten your password and can't login, you can request a password reset at anytime by following the below instructions:
At the login page click the "Forgot your password?" link
- Fill out the reset form with the email address associated with your Untappd account
- If you are a brewery account please select "Yes" for the "Is this for a brewery account" dropdown
- Check your email box for an email with a link to reset your password and follow the instructions
If you are having trouble finding the link you can head there directly by going to this link: https://untappd.com/account/reset_password.
Keep in mind the reset page is only accessible if you are logged out. If you are logged in and want to change your password you can do so in your account settings.