RBR50 wifi clients connected without internet - intermittent but frequent enough to cause concern

The DHCP lease time for user devices remains 86,400 seconds (one day). Netgear removed the telnet option, possibly because of customers harping about how "insecure" telnet it.  Or, because telnet was never available in the AX product line and someone decided to make them consistent.  Without telnet, the way to determine the lease time is to capture the DHCO lease offer packet with a packet sniffer and find the value inside the packet.  I use Wireshark (free for Windows, Linux, Mac)

My Android Orbi app has a disappointing pattern of connecting by default with Anywhere Access and then, almost as an accident, mentioning that "local connection is available".  My guess is that what is happening is the app attempts to use Anywhere Access, cannot make a connection to the Netgear 'cloud', and gives up before it would have attempted to find a local connection.  This behavior annoys me a lot.

A magenta ring indicates the router cannot connect to the internet.  See page 9 in the user manual:

https://www.downloads.netgear.com/files/GDC/RBK50/Orbi_UM_EN.pdf