Wrong image on product page

Hi there,

I installed the WooCommerce Boost Sales plug-in and added up-sells to some of the products.

It mostly works fine, but I’m encountering a problem with products that have more than one image.

For instance: let’s say I have a product a and it has three images (one main image and two gallery images). If I set product x and product y as up-sells and go to the product page of product a, it no longer shows the main image of product a, but the main image of product x.

Do you know how to fix this?

Kind regards,
Herbert