Sorry, you have reached your activation limit for this license
You’ll receive this error message when you try to activate your license on more sites than your plan covers.
If you deleted plugin data or you changed site URL (e.g. from non-www to www) without deactivate license before, the license activation counter keeps in one (or three), that’s your license activation limit.
To solve the problem, Go to My Account → Licenses, click on “Manage sites” and delete current site. After doing so, you will be able to activate your license again from: Your site > wp-admin > WooCommerce > Settings > Zone Pricing > License.