hello @sharonrobards
We have just released Maintenance version for full compatibility with WooCommerce version 3.0.4 and backwards which i assume you are using? Please download the latest version to see if it fixes the issue for you. If not please check the theme you are using as WC 3.0 breaks many themes and any plugin that queries the WC db
Here is Sort and Display chaanelog for the maintenance version released today.
1.7.6 – 2017/04/22
* Tweak – Tested for full compatibility with WooCommerce version 3.0.4
* Tweak – Tested for full compatibility with WordPress version 4.7.4
* Tweak – Change call direct to Product properties with new function that are defined on WC v3.0
* Tweak – Called action for save data of plugin after WC data is saved on new WC 3.0 CRUD
* Tweak – Change priority for save_post action so that it is called after WooCommerce save the product data, to get the correct data on WC v3.0
* Tweak – Update query for get products are featured from term instead of product meta on new WC v3.0
* Tweak – Update query to get outofstock products from term instead of product meta on new WC v3.0
* Tweak – Get outofstock from term instead of product meta on new WC v3.0
* Tweak – Update query to get products that are exclude from catalog from term instead of product meta on new WC v3.0