I actually did just that, rolled back to the previous web version. After that, all the missing notebooks with notes appeared in the web version. Next, I uninstall and re-install the iOS application, log in to the application from the cloud, notes start loading, during synchronization I receive a call to the iPhone, I talk, after that I return to Evernote, but the same notebooks disappear again. I reinstall the application on the iPhone again, but again only a small part of the notes appears there, a little over 10 %. I again go to the web version (this is the previous version), and the same notebooks and notes 1802 again disappear there, as in the application for iOS. Everything is fine in the app for macos. How can this be ??
It turns out that the problem arises again after using the iOS version of Evernot. And what to do? Now to roll back the web version to the newest one? It's not funny anymore!