You can. I can't tell you how right now as I don't have access to a suitable platform. You can however, search the Tutorial for files restore and recovery. Also look at your User Center.

Two ways: 1)  2) 

New users, Were you were playing with the controls on the bottom left of your drawing? Did you click on the '+' button? Did your design suddenly turn into a blank page? You can't find your working design in the project tree? Well, that's because you have just discovered how to create a new page! Assuming you didn't close your design, navigate back to the page you were working on: [https://docs.easyeda.com/en/Schematic/Multi-Sheet/index.html](https://docs.easyeda.com/en/Schematic/Multi-Sheet/index.html)