I understood the issue you are having with. I have tested the Team widget of the Latest Version of the ElementsKit plugin but couldn’t be able to detect such issues in my development environment. The images seem to be showing fine.
I also have inspected the Team Widgets you’ve inserted on your site. On closer inspection, I noticed that the Images are getting converted to a kind of SVG file that is being served(Screenshot). Since there are no such files, that is why the image area is showing blank.
Most often, The image gets converted due to enabling the Lazyloading for the images. Would you please check by disabling the image Lazyload and then clearing the caches from your site and browser? I hope it will help.
Let me know the update after making the mentioned changes. We are always here to assist you.