Customer Coupons for Woocommerce Plug in

Hi,

I found this plugin and decided to give it a try because I tried your other plugins with other sites and they are good. After testing the features, I decided that this plug-in is not what im looking for and deactivated it. To my dismay, the prices remained at the discounted price.

So it means before installing this plug in, I had created coupons, say a 20% one. Customers have to enter this code to enjoy the discount. After activating this plugin, the discount is automatically applied. Problem is after deactivating and even deleting the plugin, the discounted price remains. I am very concerned what codes did you inject into my file? Fortunately, my website is under construction but I need to go live soon.

Please revert urgently with a solution.

Thanks.