Hello, I'm Thang from VietNam, Have 6 years experience in PHP, CSS, HTML, XML, AJAX, programming. And many platforms such as Oscommerce, Prestashop, Joomla, Wordpress, Opencart, Cs-cart, X-cart...
I'm very familiar with Opencar and I'm very interested in working on your project.
The voucher you used is existed on opencart or the other module.
Let me help you fix this, it easy with me.
Looking forward to work with you.
Thank you and best regards.
Thang