1) What browser are you using that’s causing the app to render so poorly?
2) You can’t use the :80 since that’s the web apps’s port. I will add some code to prevent you from using the wrong port since this is becoming an issue. In the meantime, just use 192.168.1.50:8080 instead of 127.0.0.1:80 and see if that helps. Just to be clear the web app is asking for the OpenSprinkler interval program IP and port.