Jurgen, you might need to back a step to go forward as reversing is a bit different. Can I suggest that you first set-up the Raspberry Pi Zero W as a WiFi access point connected to your network. There is a good article explaining the setup at this link HERE. You need to scroll down that article as the bit you want starts with the ttitle “Using the Raspberry Pi as an access point to share an internet connection (bridge)”. If you manage to get that set-up then you can connect your PWS to the Raspberry Pi Access Point and your weather data should start flowing through the Raspberry Pi and out to the WU Cloud. Once that is confirmed then we can put the “intercept” logic in place.