Howdy, thanks for letting us know! We've gotten a few other messages about problems with the Mac version specifically and are looking into fixes, although in testing yesterday with our fairly recent macbook pro everything seemed to be working fine. We'll let you know if we figure anything out! Off the top of my head I'd check any security, firewall, and antivirus settings to see if they're blocking the game somehow. You might also want to try out Parsec or Remote Play Detached in the meantime. Thank you for your patience and stay slimy!