Per the OpenVPN log on my phone:
Error parsing IPv4 route: [route] [192.168.1.1] [255.255.255.0] [192.168.1.1]: tun_prop_error: route is not canonical
Per webpage when try to access a site: DNS_PROBE_FINISHED_NXDOMAIN is the DNS error message
Same problem found on NG support page:
https://community.netgear.com/t5/DSL-Modems-Routers/nighthawk-AC1900-D700-VPN-setup/td-p/1137484
But NG is too LAME. Note its over the moderator's head.