Hello! I recently bought another copy of Stardew Valley for my son. However, while I can host and join multiplayer games, he is unable to. We use Steam, and when I switch computers and log myself into his computer, I am able to host and join, but he is then unable to on the other computer, so I know it isn't an issue with the pc's. I also checked and made sure our privacy and account info on steam was the same. Any ideas on why he is unable to play multiplayer with his account?