IMPORTANT: It’s not connected with the plugin! It’s WooCommerce Rest API problem.
To solve this you need to:
- Go to Admin Panel
- Settings -> Permalinks
- Change “Common Settings” from Plain to Post Name (or any else, but not default Plain)
If you already using your website, or don’t want to change permalinks, you need to contact with your Hosting Provider and ask to set
<Directory /var/www/wordpress/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory>
Note: Default Plain permalinks is not a good practice!