As far I know, Evernote always have been runing smoothly behind VPN or offline, I'm not new using it, I've been with it for years (> 650 technical notes, 1st note taken Oct 17 202), dozens of them while offline. Never had problems until now, either behind VPN (wich I'm using with Evernote capped for at leas 3 years now) or simply by taking notes without internet connection. Even web clipper could, a few weeks ago, be able to take notes while behind VPN and leaving them in caché, when Evernote servers where reachable again the notes/clipped content got synchronized.
Can it be my company VPN, yes it can. Then I just need confirmation that I'm wrong and EN never worked offline or behind VPN, may be from EN Team or anybody here who can -and want- confirm it.
My main concern is that EN had retired offline features and capabilities, if it is a version issue it will be solved and that's why I people write on a forum not to barking up trees, aren't you?