VPN Update - Make More Secure
It is really rather worrying that under Windows and presumably macOS - though not a big problem under Linux - Proton VPN disables itself during updates, leaving the OS to do as it pleases unless Permanent Killswitch is enabled. There are better ways of performing an update.
Ideally, the update would be downloaded and then all networking shut down while the app resets. Only when the app is up and running again would networking be enabled again and the previous VPN connection re-established. If a complete OS reset were required in these conditions, so be it, just warn users to exit all other apps.
Otherwise, VPN is pretty perfect, although universal availability of Stealth protocol would be neat.