If you are having Verizon MiFi VPN issues, do the following; Restart your MiFi devices and check their connection, Ensure that your MiFi has the most recent firmware. Verify that your VPN app is updated,  If feasible, attempt to connect from a different location and VPN server. Verify the validity of your subscription.  If the issue remains after confirming the information above, contact their customer care support for help.