@alco, OK, thanks for clarifying, the OP was talking about a weewx skin so I presumed you were referring to that as well.
I assume you tried hitting the local Weather Service directly to ensure the port was open and accessible, i.e. http://192.168.1.111:8081/weather1.py?loc=50,1&wto="h":100,"t":100,"r":100,"bh":70,"bt":59,"br":0. This should result in a json response with the watering scale. If that works then the problem is upstream. Can you confirm that you have set a “location” in App i.e. you have gone into the App->Options->Location and clicked to specifiy your PWS location. Without that things wont work at the moment. Let me know and happy to help diagnose.