Thanks for your answer,
As 'fast note,' I meant to say I generally use the widget to add a note. A sort of pop up appear and I add a note without opening the app.
This method worked for weeks before I noticed, entering the app, I was not apparently logged in. Once I log in I noticed the latest notes were not present at all. But the nots were "accepted" and no any warning appear.
My device is a OnePlus 10 running Android 13. Evernote is 10.52.1
I tried to access with a desktop version but couldn't log in because I saw there were 3 device connected, one was web version. So I cancel it... 2 times ... And Evernote said I could not add our cancel any other device.
I had to subscribe 7 days free trial to log in in the desktop version.
After searching a lot I found a program Evernote2Onenote (something similar) to transfer the notes on OneNote. Finally this was done.
I like Evernote in it's free version but cannot accept the risk to loose notes again.
Thanks
Claudio