the outdoor temperatuyre/humidity data should be coming through on channel 1 by default
Watch the temp/hum data arriving from the WMR200 via the separate data reader program, running down in the system tray (double click that icon to bring that up visible)
If its not on channel 1, then in WD you can set the channel number to use for outdoor temperatuer to that number via view, wmr968/w,r100/200 extra temp/hum or in the weather station type setup, WMR200 setup