I have use Evernote over 6 years. I wrote a lot of important information with it. But the app always ask me to verify email address or change email. Today when I open the app, it pops up a premium upgrade button, I clicked cancel, then all of my notes are gone. I tried to sign in with all emails in web app, and recover, but it is empty.Just like a complete new user account. It is crazy Evernote not able to commit keep user data safety and persistency. I would never touch Evernote again.