WooCommerce REST API Documentation
HeiChat needs WooCommerce REST API keys to connect with your WooCommerce/WordPress store.
The WooCommerce REST API works on a key system to control access. These keys are linked to WordPress users on your website.

To create or manage keys for a specific WordPress user:
Go to: WooCommerce > Settings > Advanced > REST API
Note: Keys/Apps was found at WooCommerce > Settings > API > Key/Apps prior to WooCommerce 3.4
Select Add Key. You'll be taken to the Key Details screen.

Add a Description (e.g., "HeiChat-read")
Select the User you would like to generate a key for in the dropdown.
Select a level of access for this API key:
Select Generate API Key, and WooCommerce creates API keys for that user.
Now that keys have been generated, you should see Consumer Key and Consumer Secret keys, a QRCode, and a "Revoke Key" button.

The Consumer Key and Consumer Secret may be entered in the application you'll be connecting to using the WooCommerce REST API. The app should also request your URL.
Copy The Consumer Key and Consumer Secret along with your site domain and paste to HeiChat's setting page: https://manage.heichat.net/integration/woocommerce