Multisite and Proxies

I’ve installed the Multisite Version of WordPress on my work’s server with much ease and success, but I’ve ran into a few issues.

– The first issue is that, my wordpress install when ever I try to look for a plug-in, it’s giving me this error “An unexpected error occurred. Something may be wrong with www.ads-software.com or this server’s configuration. If you continue to have problems, please try the support forums.”
– The second issue is that none of the feeds that are pulled from WordPress are working “RSS Error: A feed could not be found at https://www.ads-software.com/news/feed/. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.”

I understand that the server is behind a load balancer and a firewall, and I was able obtain a proxy host and port address. I looked up how to set up a proxy connection and all of the resources I found was to add a few lines of code in to wp-config.php file. I followed all the steps but I am still getting the errors?

Please help!

sample:
define(‘WP_PROXY_HOST’, ‘192.168.84.101’);
define(‘WP_PROXY_PORT’, ‘8080’);
define(‘WP_PROXY_USERNAME’, ‘my_user_name’);
define(‘WP_PROXY_PASSWORD’, ‘my_password’);
define(‘WP_PROXY_BYPASS_HOSTS’, ‘localhost, https://www.example.com’);