Glad to read that you resolved it. :)..was going to ask you last night ( I was posting at about 04.00 am my time ) and didn't get around to it, to get them to check their firewall again to be sure that they had not blocked you specifically from running scripts..
Unusual for that to just "happen"..maybe they were rebuilding a kernel at the time you were working ? or tinkering at their end with config..
They need to check their logs more frequently , they should have been able to see you being refused at your IP..