I'm going to try to explain the issue I'm having with our site.
I'm pretty sure the problem is with the Drag n Drop shortcodes plugin. However, I have done the turn off all plugins routine and see if you can narrow it down to which one is causing the problem.
Currently when I edit a shortcode, nothing pulls up and I can't save the page.
So if I click on a section to edit, it just shows up blank. See screenshot.
So my one option is that I can delete parts. However, when I click save, it just rotates and never saves.