We currently support a minimum of WordPress 4.1 and WooCommerce 3.0. However we encourage you to test and run the most up-to-date versions of all your plugins and themes. This will ensure a smooth running business and reduce your chances of security and other problems.
Jamie is the founder and lead developer of WC Vendors. He has been working in the WordPress, WooCommerce and Marketplace space for more than 15 years, 9 of those dedicated to multivendor marketplaces.