Hi Tian,
It’s admin Wayne here.
I think I know the issue.
That version you downloaded is bundled as an extension. However Blender 4.0 doesn’t know what extensions are – as they were introduced in 4.2+
So it will install it correctly, but 4.0 won’t be able to see it (any version from 4.2+ will be able to see it)
So you can install the version that is bundled with the course files as Martin showed – this will work with 4.0
Fun Fact: I forgot that extension add-ons are ‘different’ to legacy add-ons even though there’s just 1 extra file.
