Thank you for your kind words @garrett Hyder @ Eclipse Creative but many more thanks for making a more dynamic and reusable fix for this.
Kudos to you and @lopeax for getting the ball rolling.
I’ve just tried it today and same problem.
The simple fix is: with FTP, rename the plugin’s folder to disable it.
Obviously, other people are saying it works great but there does seem to be either
1) Something universally wrong with it now
2) Something about our wordpress setups that stops it working.
I expect it’s 2) and I wonder if some security setting is blocking it from getting the images.
If it’s working it’s probably a good plugin but not worth the effort for me.