The Grider widget allows you to use WooCommece products as a source for the posts grid. To start working with products you need to install WooCommerce and get an API key.
To get the API key, follow the steps:
Go to WooCommerce>Settings>Advanced tab>Legacy API and check the box for the option “Enable the legacy REST API“
Go to WooCommerce>Settings>Advanced tab>REST API
Go to the Legacy REST API tab and check the box Enable the legacy REST API.
Press Add key to generate a new key.
Enter the required information for the key and press Generate API key.
Copy and save the generated key and secret.
Go to Grider for Elementor>WooCommerce and paste the key and secret.