The Instagram images in my feed aren’t visible

If your WordPress theme is using lazy-loading (or something similar) then it usually sets the opacity on images to be zero which hides them until you scroll down the page. This can sometimes cause problems with the images in your Instagram feed not being visible. You can override this by simply adding the following to the Instagram Feed plugin’s Custom CSS section, which is on the plugin’s Customize page:

#sb_instagram img { opacity: 1 !important; }