This problem has since been solved, see this article for information: https://kb.netgear.com/000061261/Google-Chrome-77-is-blocking-access-to-NETGEAR-login-pages-what-do-I-do
On the latest version of Chrome (77.0.3865.75) we have identified an issue where users may have trouble logging into their Netgear Nighthawk Pro Gaming router. This affects the XR300, XR450, XR500 and XR700, it does not affect users of the Netduma R1.
Instead of asking for a username and password as normal, the router will instead direct you straight to the Password Recovery page.
We are aware of this issue and all relevant parties have been notified, there will be a fix as soon as possible.
For the time being, we recommend that you manage your router using a different browser. We have confirmed that the issue does not affect Firefox or Edge.
We apologise for any inconvenience this may cause.