Can we use this plugin on multiple sites?

Yes! As you know, the CBULKiT – Advanced Bulk Coupons for WooCommerce Plugin is a premium product that is sold through the iThemeland store. For each purchase, you will be assigned a purchase code, and you can use this purchase code on only one website, so to use the CBULKiT plugin on your various websites, you need to separate license for each site.