How to Validate Serial Key against a Product

WooCommerce Serial Key gives the store power to validate all generated serial keys against orders & products. The validation process also checks download limit & expired download.

How to Validate Serial Key against a Product
WOOCOMMERCE->SERIAL KEY PAGE

To check validity of serial key, you’ll have to send serial key & sku of the product to your store’s address. The address will look like: http://www.yoursite.com/?wc-api=validate_serial_key

If the serial key will be used more times than the usage limit, as per your setting, you can get this information while validating the serial key.

How to Validate Serial Key against a Product
USAGE LIMIT VALIDATION

A detailed explanation along with an example is given in the plugin itself. You can go to WooCommerce > Serial Key > How validation works for that.