Anyone eligible to book during a presale will usually receive an email beforehand, containing a password or a secure internet link which allows access to the tickets. This will be sent directly from the fan club or venue – wherever you signed up for the presale.
If your password doesn't work, contact whoever provided you with the link and password and they'll be able to help. Ticketmaster doesn't have any access to links or passwords and can't issue new ones.
Presale codes don’t guarantee tickets.