Set up problem

> [...] I want to log into the router.

   Using a Web browser?  On what sort of device?

> The genie does not open, when I try www.routerlogin.net it tells me I
> am not connected to my router's wifi network.

   As usual, showing the actual error message would be better than your
interpretation of the actual error message, but it does sound like the
all-too-common "You are not connected to your Router's WiFi network."

   Netgear routers translate "[www.]routerlogin.net" to the router's own
address, _if_ you're using that router as the DNS server.  If you use
some other (real) DNS server, then "[www.]routerlogin.net" will take you
to some Netgear server (currently 52.40.244.61, 54.186.157.116, I
gather), which will return that "You are not connected" nonsense.

   With no information on the system on which you're running your Web
browser, I don't know how to determine/change which DNS server(s) you
might be using.

> [...] I have tried all the instructions offered on that screen, but
> nothing works.

   It's a seriously unhelpful page, with mostly useless advice.

   An alternative to "[www.]routerlogin.net" would be the router's
default IP address, which might be "192.168.1.1".  (Or use your
computer's IP address as a template, if you know how to find that.)

> [...] The modem seems to be working fine.

   When you do what?  Connect your computer directly to the modem
instead of involving the R7000?

You are not the first person to experience this problem. (See this forum for many other examples.) Netgear even has an article on the topic that you should read:

If you cannot login to your router | Answer | NETGEAR Support

Unfortunately, there is no single "do this and it will fix it" solution.

One thing to try is the IP address for the router – usually http://192.168.1.1 – but your modem may have taken over control and assigned something else.

Remember, when setting up a new device, you need to follow the sequence described in the Quick Start guide, which is somewhere at the end of this link:

>>> R7000 | Product | Support | NETGEAR <<<

Good luck, you may need it.