- Install and activate WPInterface SEO first.
- Upload the Pro zip under Plugins → Add New → Upload Plugin and activate it.
- Go to SEO → License, paste your license key and click Activate.
Your license key is in your WPInterface account and in your purchase receipt email.
Without an active license
All Pro features work without a license. An active license gives you updates (through the normal WordPress update screen) and support.
The License page shows the status, expiry date and remaining activations. Deactivate on this site frees the activation, for example before moving to a new domain.