I was unable to download data using nds2. Gabriele had reported similar problems a week ago but I hadn't followed up on this.
I repeated steps 5-7 from elog 13161, and now it seems that I can get data from the nds2 servers again. Unclear why the nds2 server had to be restarted. I wonder if this is somehow related to the mysterious acromag EPICS server tmux session dropout.