Download instead of open

Hello @jparra-1,
I’m sorry to be late with the reply.

Try this snippet

function dco_ca_get_attachment_preview_with_download( $attachment_content, $attachment_id, $embed_type ) {
	if( 'misc' === $embed_type ) {
		return str_replace( '<a href', '<a download href', $attachment_content );
	}
}

add_filter( 'dco_ca_get_attachment_preview', 'dco_ca_get_attachment_preview_with_download', 10, 3 );

Since version 2.3.0 you can use this snippet:
add_filter( 'dco_ca_force_download_misc_attachments', '__return_true' );

Marking as resolved. Feel free to reopen this topic, or create a new one if you have another questions.