Unable to access router R6400 remotely and unable to reset password for remote access

[cgibbs18]

I am using the Genie app (most updated version from App Store (v. 2.4.24) to access my Netgear R6400 router (firmware V1.0.1.12). I am able to do so successfully from home. However, I am not able to access the router remotely. It appears that I am registered for remote access, but my password evidently is not correct. I do not know my password. So, I tried to re-set the password. I then received an e-mail with a link to click to re-set the password. When I click the link, a lengthy error message appears, beginning with "HTTP Status 500 - Request processing failed; nested exception is java.lang.illegalArgumentException: Locale part "en-us" contains invalid characters". followed by several lines, including sections that begin with the headings "type", "message", "description", "exception", "root cause", and "note". Suggestions?

[cgibbs18]

The following is the full error message:   HTTP Status 500 - Request processing failed; nested exception is java.lang.IllegalArgumentException: Locale part "en-us" contains invalid characters

---

type Exception report

message Request processing failed; nested exception is java.lang.IllegalArgumentException: Locale part "en-us" contains invalid characters

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: Locale part "en-us" contains invalid characters
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

root cause

java.lang.IllegalArgumentException: Locale part "en-us" contains invalid characters
	org.springframework.util.StringUtils.validateLocalePart(StringUtils.java:710)
	org.springframework.util.StringUtils.parseLocaleString(StringUtils.java:690)
	org.springframework.web.servlet.i18n.LocaleChangeInterceptor.preHandle(LocaleChangeInterceptor.java:73)
	org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.52 logs.