From the screenshots, you do not appear to be running the free edition, but the complete edition.
I'm afraid your .c3p file contains 6 events, and that's it.
From the look of it, everything "is fine" so far.
You perhaps attempted to save your file when you were in free edition, going over the number of events the free edition allows, and so the file was not saved.
It sounds like a "I thought I had saved my file" issue.
It is a good time to learn to backup regularly and possibly set the backup options.
If those were already set, perhaps you can try and check if you do not have a .backup file existing on your hard-drive that you can recover your project from.