Re: ERR_SSL_KEY_USAGE_INCOMPATIBLE

No.  Use the web browser "advanced" feature, usually toward the bottom of the page, to "proceed to this site anyway" and the web browser will remember until the system is rebooted.

Netgear (and other vendors) have been caught in a "Catch 22" by advancements in web browsers designed to protect users.

• Use of http (unencrypted) web access is now feared because it is technically possible to intercept the transmission between user web browser and router web server and thus discover sensitive information, such as the user login password.  Thus an attempt to open any http web site will produce this warning.  "Unsafe!  Go Back!"  Never mind that the router is not across the world from the user and that the connection is either (a) through a wire entirely within the user's property or (b) through WiFi which is an encrypted medium.
• For years and years, Netgear owned recognized SSL certificates for a number of URLs, including routerlogin.com, routerlogin.net, orbilogin.com, orbilogin.net.  Several years ago, those SSL certificates expired and Netgear did not renew them. (Maybe they forgot?  Maybe someone at the certificate place said, "wait a minute.  These URLs never resolve to any actual place on the web.  They always get intercepted by the user router.  No way can we certify which web location these are going to."  The end result is that Netgear includes a Self-Signed SSL certificate in the web server for https (encrypted) connections.  Modern web browsers, however, fear Self-Signed SSL and warn "Unsafe! Go Back!"

This cannot be "fixed".  Some web browsers are especially sensitive and make it harder to "proceed where I told you dammit".