Thanks, using Duplicati.WindowsService.exe secure-datafolder the problem was sorted.
As for the backup issue, I’ll try the purge shortly, but it reminded me about something else - pausing pauses everything? As I was going to run the purge I remembered the backups were paused for some time, so I therefore cannot run anything unless I resume and then the missed jobs all run. It’s quite annoying that through the UI I cannot run anything while paused and have to resume which can mean waiting a long time for something to fail just to be able to try and fix it, potentially making things worse. I think the “pause” should be more granular e.g. add a separate pause button to each job