Restore changes done by other editor (or restore previous website)

Hello. I’m fixing the website aiho.org.ph homepage. I was using KingComposer editor before. Today, I tried using Elementor editor to do add widgets in the homepage (you may notice the list of articles at the lower part of the page). Now, the upper part of the page, which I “designed” using KingComposer, cannot be editted. I tried to undo the changes in KingComposer editor, and while it restored the changes, I cannot edit the upper parts with my first editor.

Now, is it possible to restore the whole website in its previous version, so I can undo any changes I did in the website? Help will be much appreciated. Thanks!

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