Still issues with shop

We recently updated our plugins including WooCommerce version 3.0.4 and eventually to 3.0.5, and ever since then we’ve had a serious issue on the shop.

I believe the data importer was run, but I can’t tell for sure. The site is https://www.dev.smithhonig.com.

We have art and pillows that we sell and every product belongs to a group (each print is on a pillow of different sizes, canvas of different sizes, etc.). The pillows don’t seem to be affected but all substrate groups (canvas, wood, metal, leather) are. The groups show on the product page with a red out of stock bar and no price range ($180-$240). On the admin dashboard, if I search the simple products, they each show their group name link like they used to but when I search the grouped products in the dashboard, they show no SKU or price at all.

On the shop page, if I click one of the empty groups, it shows this in place of the links to the simple products that used to be there:

Notice: Undefined variable: grouped_products in /home/smithhonig/dev.smithhonig.com/wp-content/plugins/woocommerce/templates/single-product/add-to-cart/grouped.php on line 32

Warning: Invalid argument supplied for foreach() in /home/smithhonig/dev.smithhonig.com/wp-content/plugins/woocommerce/templates/single-product/add-to-cart/grouped.php on line 32

Our shop is a mess now, any help is much appreciated.