same here, nighthawk app says C6300 modem router not supported

[ckoslosky]

same here, nighthawk app says C6300 modem router not supported, so is this accurate and therefore nighthawk app will not support this expensive cable modem?

[FURRYe38]

You can use the browser to login/manage it or the genie app. 

The C6300 is circa 2014. So might consider something a bit newer that supports the NH app if you feel you really need to use the NH app.