Reset Zen Cart admin password

If the techniques above don’t work, use phpMyAdmin to create a temporary admin user directly in the database. You must have database control to do this. Open your phpMyAdmin (supplied by your hosting company), select your store’s database, then click the “SQL” tab. Run this query:

DELETE FROM admin WHERE admin_name = 'Admin'; 
INSERT INTO admin (admin_name, admin_email, admin_pass, admin_profile) 
VALUES ('Admin', 'admin@localhost', '351683ea4e19efe34874b501fdbf9792:9b', 1);

You should now be able to login using the following details:
Username: Admin
Password: admin