Browser Based Game Not Working With Proxy

I'm attempting to use ghost browser which is just chrome browser but allows multiple proxies in each browser window.

When I connect to a browser based game which seems to be in javascript or something, the proxy is not working, however I can browse the web in all 6 windows on different IP's. Why in the heck won't my proxy work inside the browser based game???? I need to open it in a few different windows and it's detecting the same IP. Thanks.