File download/view permissions

Hi,

Thanks for contacting us here about this extension.

Is it possible to allow only certain users to download the files and everyone else to just view the PREVIEW?

Yes, you can disable Download button for specific user groups. Please go here for further information:
https://www.joomunited.com/wordpress-documentation/wp-file-download/666-file-access-and-management-limitation#toc-file-management-setup-by-wordpress-user-role-2

Cheers,