Hello,
1. Please provide us with your website URL so we can take a closer look.
2. I would recommend you to contact woocommerce support.
3. Customize > Wocommerce > Product Images
Before 3.3 version WooCommerce had options for every type of image – single product, catalog and gallery image. In version 3.3 WC developers changed options and moved them to the Customizer. In version 3.3.3 they removed image settings at all even from customizer. We keep the previous version of their settings http://prntscr.com/ik093w But 8theme product widgets and gallery images use WP thumbnails size (Settings > Media) because WC customizer does not have the individual settings for this because of 3.3 update. So, if you don’t want to crop thumbnails images disable crop in WP settings and regenerate thumbnails. You may also try to change image settings using WC hooks that WC developers offer https://github.com/woocommerce/woocommerce/wiki/Customizing-image-sizes-in-3.3-
4. Try to resave settings in wp-admin panel > Settings > Permalinks.
5. Please provide temporary wp-admin access in Private Content.
Regards