Something has happened in the latest update that broke communication of the servers with steamcmd. I don't know what changed, but I've spent a long time troubleshooting this to no avail. I've gone so far as to start with a clean ark server and steamcmd, but still no dice. I may be able to get some time to troubleshoot tomorrow, but my schedule is very tight these days. Unfortunately this means the Ark servers will be down until the problem is resolved.