Help, my (non-published, only shared) project disappeared after I renamed it on website

Can it be recovered???

Have you tried changing the url to include the new title?

Yes, I have. It made no difference.

Have you tried changing the name back to the original?

I have tried to no avail. Also, I find it strange that the original name still appears in the listing (see printscreen) but when I click "Open", it says "Load failed: TypeError: Cannot read...". I then tried clicking "Publish" to see if it will open it but no, it doesn't.