Apologies for the delay in responding - just completed two upgrades, SharePoint 2007 to SharePoint Online and SQL 2008 to SQL 2016, now that the dust has settled, I have some spare capacity again :-)
@Lowell - that's a great idea. Those GUID subscription names are really annoying.
@Sue - your first assessment was correct.
So I get two great pieces of information for the price of one question. I'm on a winning streak :-)