How to make Instagram pictures displayed larger on different screen size?

Hi, I am using the WP Instagram Widget. I have the following settings selected: Width and height of feed 100%, Number of photos 9, number of columns 9, padding 4 px, disable mobile layout checked.

What I’m looking to do is keep the photos in the horizontal format. If I uncheck the disable mobile layout button, it will display them vertically. I would just like to keep them in the same horizontal format, and make the image slightly larger. It doesn’t matter if it displays less photos (3 or 4 is okay). Thank you!

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