Offering coupons to your visitors is a wonderful way to encourage them to do business with you. The Scratch Coupon Card plugin is a cool script that lets you gamify the process with scratch cards. It is responsive and should work with most WooCommerce themes around.
Once you install this plugin, you will have the opportunity to display a scratch card in a popup window on your pages. You can change text, image, and other settings from the back-end. You are in full control of content, CSS, cookie time, and other settings in the back-end.
Cynoinfotech is the developer behind this plugin. You can find out more here.