Can you check the http://192.168.1.120:8080/jo?pw=.. result? Or you can simply do a http://192.168.1.120:8080/ja?pw… which prints out all settings. The fact that your wto is basically empty means your Weather Adjustment Method has not been set to Zimmerman (it might also be due to other reasons such as you were trying to use WU API key which is not supported any more). In any case, if you can print out the /ja page I can take a look at what settings may be wrong.
I assume you are running firmware on OSPi or Linux-based system, because on the microcontroller-based OpenSprinkler (OS 2.x or 3.0), using your own weather service does not support custom port number (the :8081 is not supported on those systems).