Hi @pceuropa,
Thanks for your feedback. Envira crops according to the settings chosen (i.e. – lightbox thumbnails). Depending on your settings, this can create several cropped versions.
We generally recommend that you use the Regenerate Thumbnails plugin should you need that functionality: https://wordpress.org/plugins/regenerate-thumbnails/.
If you have any further issues, please feel free to reach out to support at https://enviragallery.com/contact/
Have a great week!
