Thanks for your nice feedback. If we automatically Crop the image used on theme, the load time of theme will really large due to hard cropped of image. so we developed a plugin to crop the image. WordPress have 3 image size and we used that image size for our theme. Please follow this link to crop the image size. https://doc.acmethemes.com/supermagpro/#SettingupImagessize
If you face any problem, let us know.