This is a premium feature available with Astra Pro.
We have seen the EDD integration with Free Astra theme.
Easy Digital Downloads Addon gives powerful and exclusive styling options for your EDD store. You can make your store all the more stylish with minimal efforts and simple customization settings.
Once you activate the Addon, settings will be available in the customizer under Appearance > Customize > Layout > Easy Digital Downloads.
Following are available settings –
More Customization options –