1. You receive Premium key look like: 54yq1phabmph9wd1d

2. You should be log in at http://cornfile.com/login.html

( Please register a new Cornfile account, if you don't have an account )

4. Access "My Account" to activate your Premium key: http://cornfile.com/?op=my_account

Enter Premium key in field with description "Apply Premium Key" and click "Apply" button