Add your license key in WordPress under Coupon Creator → Options → Licenses tab, using the "Manage License" control.
Steps:
- Make sure both Coupon Creator (the free base plugin) and Coupon Creator Pro are installed and activated. Pro will not run without the free plugin — see Coupon Creator Pro requires the free plugin.
- In the WordPress admin menu, go to Coupon Creator → Options.
- Open the Licenses tab. You will see a row for each licensed plugin (Coupon Creator Pro, and any add-ons) showing its current status and a "Manage License" button.
- Click "Manage License" for Coupon Creator Pro. In the panel that opens, paste your license key and confirm.
Once the key is saved, the row shows the license as Active. To find the key in the first place, see Where do I find my license key?. For what activation does and how to confirm it, see Activate your license.