Welcome to INTEL forum. Kindly contact your nearest Intel sales person or distributor to purchase a valid license file.
To purchase you can refer price here https://www.altera.com/buy/design-software.html you can also make online purchase or order by phone. In the United States and Canada, call Telesales at 1-888-800-0631.
Outside the United States or Canada, contact your local sales representative or distributor.