Woocommerce Already Bought enable to display custom messages for users who bought any product or if product was added to cart already. Also you can easily change default WooCommerce message that inform clients that product has been added to cart.
- Unzip downloaded woo-already-bought plugin
- Upload woo-already-bought to the /wp-content/plugins/ directory
- Activate the plugin through the Plugins menu in WordPress
- Global settings for this plugin located at WooCommerce Settings >> General >> Alredy Bought
Go to WooCommerce Settings >> General >> Alredy Bought and enable plugin and options and define the custom messages.