One connection has disappeared after a firmware update

I updated my router to the latest firmware version (V1.0.4.8_10.0.77). Now the device connected to port #1 does not show up in the "Connected Devices" in the Netgear Genie. It is IP 192.168.102. IP addresses 101, 103 and 104 all display, but not the 102 address anymore. I thought maybe the cable had gone bad, so I replaced it with a new Cat 5e cable. No luck. Rebooting both the compute and router did nothing. I powered down and bak up the 102 device and still no luck.

In case you are wondering, my 102 device is a Davis Vantage Pro2 weather station counsel which gets routed to my "Weather" computer via this router. It has worked fine until today. I am open to any suggestions on what to try. It is important to get this working so I can forward my reading the the Weather Bureau, etc.