[CLIENT] Beta Login Fails; Legacy Login Works

I recently upgraded to the legacy client, and it will update just fine, but whenever I try to login, I get an error that states that the client was unable to connect to the login queue.

However, if I switch to the Legacy client, it works perfectly fine. It also updates like normal, but the key point is that the legacy client login works. I can get in and play normally with the legacy client, but not the new client.

What is treated differently between the new and legacy clients' login processes? Do they use a different URL? A different port? Are they different programs that need to be added to a firewall whitelist separately?