Variation swatches of imported products

I am using “WCBoost – Variation Swatches” plugin to display product variations with some visual enhancements. Variable products should display thumbnails and when these are clicked, the image of the respective variation should appear big, just like it is on Aliexpress. But this is not working anymore, the thumbnails are not showing and also there is no image switching when the variation is selected. I remember this working, but I’m not sure if it was the same plugin, although this one has the necessary features. Which swatches plugin do you recommend to display variations exactly as they are on Aliexpress?

If you need to access my website to check the problem, let me know.