URL with port number doesn't seem to pass through proxy

I am a new user, so please forgive me if this is a dumb question. i installed screen-scraper. everything is working fine creating tutorial scraping sessions.

when i attempt to create a proxy for a url with a port number, it makes it to the screen-scraper proxy, but the proxy doesn't seem to get a response back from the requested site.

the proxy log has these two lines, that's it:

Processing scripts before an HTTP request.
Requesting URL: http://216.74.152.199:8082/en/systemmanagement/login.jsp

any help would be appreciated. thanks!