This module can create custom renew invoice for any product by client. For example;

Client bought a cloud server with monthly billing. He like it but he dont want to renew just a month he want to renew long time (3 month, 6 month eg.). First, he go to product details page and click “renew” button. Then chooses how many months to renew. Finally, he pay custom invoice. That’s OK! The product has been renewed in during the period chosen by the customer.