Devices disappeared from network map

I found the answer! - What you need to do after you access the network map in NETGEAR Genie is to click on the rescan button (two curved arrows) at the upper right corner of the screen. This brings all the devices into the map.  You have to do this EVERY time that you run NETGEAR Genie.  With the older version of the software you did not have to do this - it did it automatically.  Just another nuisance to remember!