One of the most popular router manufacturer brands is Netgear, which we run into everyday. Unfortunately, these routers cannot act as OpenVPN clients and that is really unfortunate as many of our users are unable to connect to our service as a result.
If you have a Netgear router, the NordVPN team would suggest you to check if your router is supported by DD-WRT firmware over here and if it is - we would encourage you to flash your router with it. More information on installation of this firmware can be found here.
Afterwards you could simply use our tutorial on how to connect to our service with DD-WRT firmware.
If you run into any issues, please screenshot us your routers VPN configuration page together with the connection log which can be found under Status -> OpenVPN tab and send this information to us via here.