Back again after a couple of early morning hours of blank screens and strange messages. Many thanks for your patience.
Sorry, “unplanned downtime” is the official term apparently. I’m told “the outage was due to quicker than expected growth in traffic”. Just too many visitors then. But the good news is that this has inspired Subhub who host this site to invest in something scaleably bigger and better. They assure us this problem should not recur. Please keep your fingers crossed.