If we click on the button of the color of an item, all the related pictures are shown vertically on the screen. We do not want that effect, but we want just one big image, with some small images below.
Yes, I need admin access and site to be online otherwise I cannot check and help. Meanwhile, deactivate all the plugins not related to the theme, and switch to the parent theme if you are running the child and check,
Make sure your theme and related plugins are updated