Hi you can Add a filter in your function.php..
To replace the original plugin product line with your new line
You can ADD or REPLACE LINE depends your needs
this code is an example to ADD or REPLACE LINE
<?php
add_filter('nftb_order_product_line_hook', 'my_item_line_function', 10, 3);
function my_item_line_function($message ,$product_id, $item) {
// ADD SOME CODE $product_id TO ORIGINAL row $message.
$modified_data = $message. "->".$product_id. "\r\n";
// REPLACE Product ITEM LINE CODE WITH YOUR CODE without concatenate $message.
$modified_data = $product_id. "\r\n";
return $modified_data;
}
?>
instead of return the ID write you code to get the ?attribute and its price from product ID