Help with responsive version

I bought the pro version in order to automatically downsize the images on mobile devices.

I selected the Inside a <div> option for my images and previewed the page.

Now on desktop and landscape mobile versions of the site, the images are much larger than the pixels set when I created them, do not retain their round shape and do not retain the margin with the text underneath them in the same column.

I have tried all variations of width/offset to no avail. Also adding padding/border/margin on the text section under the image or the image section itself (same column) does not add any separation between the image and the text.

https://ww.wp.xz.cn/plugins/wp-visual-slidebox-builder/