Internet proxy issues

For the IP or hostname, it should point straight to your proxy server, but I’d double-check that your DNS is actually resolving it properly.

and well, if you’re using a domain name, make sure it’s hitting the right IP—sometimes small typos or DNS settings mess things up.

That "Internet session URL is invalid" error sounds like the proxy isn’t handling the session info right. In my case, switching to residential proxies made things way smoother because they act more like normal user connections, which seemed to fix the weird session issues.