Thanks @awesomerobot for your reply.
I’ve tried it again and realise now that it doesn’t work properly unless there is an image in the Topic - plus I made sure it’s only visible to logged-in users. I had only one featured Topic without an image so maybe that was the issue?
It’s working now great. Thanks for your work on this.
By the way the component settings still aren’t showing an About link on my setup even though I’ve updated just now - see the screenshots below
I can see now that about.json has the code needed:
eg for Alternative Logos (Alternative logos per theme) it’s
{ "name": "Alternative Logos", "about_url": "https://meta.discourse.org/t/alternative-logo/88502", "license_url": "https://github.com/discourse/discourse-alt-logo/blob/master/LICENSE", "component": true }