Login timed out while logging into router with Nighthawk app.

I had to reinstall my Nighthawk app and since then, when I try to login to my router it gives me a 'login timed out' a split second after I click to login. Internet is working, but I need to update firmware and a few other settings.

I, also, tried to create a second account on my phone just for the app, but I get the same issue with that one.

Trying to use a browser to connect to the router's IP, results in a timeout error as well.

Restarted router, modem, all devices and my brain, but nothing works.

Thanks.