VPN won't connect on Mac

I have Norton 360 installed on my MacBook Pro (running macOS 10.14.3).  My home WiFi network is password protected and secure.  When I reboot my Mac, I can establish a VPN via Norton 360, but it usually lasts less than 24 hours.  After that, I can no longer establish a VPN (see attached screenshot).  The problem is that if I go elsewhere with my MacBook and seek to connect say from a public café or password protect office, I can't connect without rebooting.  Any solutions?