"The game connection has been lost, the client has been disconnected from the server."
He's tried turning off his firewall, joining General Chat, and turning his graphics down to the lowest setting. IDK what else he can do with a Mac to try and fix this (besides throw it outside and never buy one again).
Any help would be appreciated. He's already given up and I'm forced to stop enjoying the game myself to help him fix it, since he cannot get a refund.