Image loading and editing features

In the past couple of days, I have noticed that my site is not functioning like it used to. Some of my images are not loading (ones that have been on the site for several months or more), and when editing the contents and features on a page (say text size and alignment) despite selecting the size and placement, it does not show up on the page.

In the past, reloading the page after I have saved everything, would fix these issues, however, recently it has not.

Seeing as I've been using the same features and not adding a lot of large media to my site, I'm wondering if this is a Squarespace software issue. If not, I would love to know how I can fix this, please.