STOPS AND STOPS AND ...
The app stops working after about 20 minutes. It must be disconnected and reconnected every time. It is a pain. It has been this way for at least a year. I finally switched to another VPN and it never stops or disconnects so I must conclude that ViperVPN is just astoundingly bad.
Mybrainscreams about
VyprVPN: VPN Secure & Private, v2.10.0