Storyboard Pro drawings disappeard

Hi guys i’m new. I have never used this program and i use a trial. Yesterday when i close the program then I immediately reopened it because I was forgetting one thing and most of the drawings are gone. the levels are there but empty. I have read that it can happen but I don’t know if there is a way to restore them. Can someone help me? I think that i know there is no way to recover. I have opened some draw.tvg files and they are actually empty or as deleted means but i want to understand why. Yes i don’t have sbpz file

What OS and Storyboard version/build are you using?

^What do you mean by this?

You can go through this post and see if you can try to recover your file.