Router r6700v3 trouble

[Kameoni]

Hello
I can’t connect to my new router with nighthawk app and also via PC.
The connection to wifi network goes fine but there’s no Internet access. Also I can’t open www.routerlogin.net. I tried to enter the router IP in browser but it directs me to expressvpnrouter.com.
Also the Wifi and WPS buttons lit but when I try to press any of them nothing happen.
Can you suggest how can I fix this? Thanks

[plemans · Accepted solution]

There's always a chance of bricking a device when forcing firmware to it. 

You can give it a shot. 

Some have used tftp or nmrpflash but get back to stock firmware. 

[plemans]

from the sound of it you bought one or got one with 3rd party firmware on it.

where did you buy it? 

[Kameoni]

I bought it on ebay. It was open box. Is it still possible to restore the original firmware?

[plemans]

You'd want to go through expressvpn for that. They'll be the experts on their firmware and the best way to get it off a router without bricking it. 

Or file a complaint with ebay. 

[Kameoni]

Thanks. Is it risky to try to restore original firmware the way like on this link
https://kb.netgear.com/000059634/How-to-upload-firmware-to-a-NETGEAR-router-using-Windows-TFTP

[plemans · Accepted solution]

There's always a chance of bricking a device when forcing firmware to it. 

You can give it a shot. 

Some have used tftp or nmrpflash but get back to stock firmware.