I understand, but we follow the envato market refund policy rules: https://codecanyon.net/page/customer_refund_policy
For that reason there is a back-end demo, front-end demo and a free version also available, to make sure everyone can check out all aspects of the plugin before buying. I'm very sorry, but for these reasons I have to decline your request.
I'm more than happy to help you with anything you need, if you have trouble with configuration or placements or anything else, I'm here to help.Best,
If you like my products, don't forget to rate them on codecanyon :)