I had just newly installed it. It was only 1 entry. So I was not sure if there was a sync option. Perhaps it was off? I didn't know.
I only have it on my tablet. When I went to find a photo and a link to put onto my journal I came back and somehow it showed the sample of a journal entry that you have when you first download the diarium. I was like this isn't my entry! But it was too late. It was gone.
I do have the sync on now for Google Drive. But I am incredibly sad I lost my previous entry.