I would recommend having your system administrator, developer, and/or web host investigate further, I couldn’t offer any useful information from this side. The number of things that can cause a cron job to fail are simply too numerous to theorize on. For me to provide any useful data I’d need a full report on the event from that side at that time. An MTR to the blizzard server at the moment a connection failure occurred, a detailed output of messages the script received when connecting to our server, etc. I suspect if that level of investigation were done, it would not point to us as the culprit.