Step 1: Install the Plugin
Download and install the plugin. Always make sure you have the latest version of WooCommerce installed on your site.
Step 2-a: Go WooCoomerce, and enable Legacy API
Go to Menu WooCommerce => Settings => Advanced => Legacy API
Make sure you enable the Legacy REST API
Step 2-b: Go BarcodeMan page & click connect button
Step 3: Integrate with Woo Commerce
a. Go to the Account page, and click "Connect To"
b. Enter your WordPress domain. EX: https://rocket-is-cool.wpcomstaging.com/
Step 4: The app will ask for permission from Woo Commerce
Click "Approve", finish the process of integration.
Now, You can use barcode man with Woo Commerce.