Certain Features No Longer Working

Essentially, there are some features that are no longer working, even though the settings are correct. For example, I had an Instagram widget in my sidebar and an Instagram scrolling feature at the bottom of the page – both are gone, even though the settings are the same and correct. I also had a secondary footer menu (in addition to my primary one at the top) and it still exists and is set to show, but it isn’t. I also have the slider on my home page going between three different posts – also still set up, but not working.

I’ve tried to get rid of these and do them again, but they’re still not appearing. I have no outdated plugins (and when I updated I checked after each one to make sure it wasn’t affecting the site so I’m pretty confident that isn’t the issue).

All the posts still work fine, it’s just all this extra stuff that appears to not be working. Do you have any idea if this could be the theme causing it for one reason or another?

Thank you!

The page I need help with: [log in to see the link]