I actually wanted to turn it OFF to preserve the logged data for when I reconnect the Davis to my Windows PC.
I found that I could select the Off position after about 3 clicks by the left side of the slider control, Save/Exit and data logging was disabled, but if I went into that screen again to check, it reset to On before I could do anything.
I think there is some confusion over versions
GrantK is refering to weatherdisplay now runs via the GTK Broadway (latest version)
and then
brianf7408 is refering to the westherdisplayclient updating
Note that you do need to have web sockets available in that browser (if using chrome then google how to make sure that is enabled).
If using another PC on your LAN to view the Broadway session, replace 127.0.0.1 with the IP address of your PC running WD Client.