Instagram feed in footer area

Hi! I have really been struggling to figure out how to do this. I am using a theme designed by bluchic and it is very responsive. I am unfamiliar with code, but the theme does have an area for Footer Script(s). When I try to put the instagram feed there, all that shows up is my text. It is in the area I would like the images to show up, but no images are shown.

I have tried using the do_shortcode method, but nothing seems to work.

Here are some examples of bloggers who have the instagram in their footer, I would really appreciate any suggestions or walk-throughs! I am out of ideas and have hit a wall!

https://garypeppergirl.com/
https://withlovefromkat.com/
https://peaceloveshea.com/

Thank you