You can easily append custom HTML before or after the Download product content by using the
edd_before_download_content and/or edd_after_download_content hooks.
For example, to add content before the main product content, you can use something like this:
function pw_edd_before_download_content( $download_id ) {
echo 'This is content added before the main product content.';
}
add_action( 'edd_before_download_content', 'pw_edd_before_download_content' );
