Via ZIP upload:
- Download the plugin ZIP from your WooCommerce account
- Go to Plugins → Add New → Upload Plugin
- Select the ZIP file and click Install Now
- Click Activate Plugin
After activation, find the plugin settings under WooCommerce → Saved Carts. The plugin creates a custom database table ({prefix}sscwc_saved_carts) and registers the cart-sharing URL endpoints on activation. If shared cart links return 404 errors after activation, go to Settings → Permalinks and click Save Changes to flush rewrite rules.