Lighthttpd is fine. My point is that the proxy works. I don’t know which router you have so I can’t know which software you can install but again it doesn’t matter which httpd you are using, I am just saying Apache since that is what I have experience with.
Okay, I looked into this and the issue is related to the Weather Underground API call made from the app. It uses http:// instead of https:// therefore the browser is denying it since the remainder of the site is SSL encrypted.