I've been using the notebook app for over five years on my phone without being logged into an account. A few days ago I opened the app and all my notes had disappeared. Since then I tried restarting my phone, updating the app and logging into my account, but nothing helped. I don't know what else I could do. I had many notes and they were very important to me. Is there anything else I can do to get my notes back? Can someone help me?