Did you install WooCommerce Simple auction plugin?. After installing simple auction plugin the install our Dokan auction add-on. After installing both of this plugin you will get a menu in the WooCommerce settings page and also in the seller dashboard.
When SImple Auctions is acivated, it created a problem in the “products” page in the seller dashboard…. it displays the product hundreds of times. I have provided my admin details a week ago and still have not heard back or had the issue looked at.