Read about that in our documentation: https://docs.anychart.com/Quick_Start/Credits

Please keep in mind that you will not be able to disable the credits footer without a license key. To purchase a license proceed to the Buy AnyChart page https://www.anychart.com/buy/ or, for non-commercial use, apply for a free license https://www.anychart.com/buy/non-commercial-license/. Hope this helps.