Elementor – WordPress Is Changing My Image File Names and Adding Numbers (150×150 for example)

I am using WordPress and the Elementor theme. When I upload images via the Image Box tool, the image shows for a few days, then at some point down the road, the image file names changes on the server and the image is then broken on the site.

On the server, I can see the original image, and then some sort of image size numbers are added to the file name such as 150×150 or 1026×768).

I understand that WordPress sometimes resizes and adds images, but I have gone into images and entered “0” in setting to prevent it from doing this. I have also gone into functions.php to remove any re-sizing issues, but there was no code related to resizing there.