Great looking addon, although it doesn't work properly in 4.3 at this time. you can apply it to one object only and the material doesn't generate. still usable but not fully functional. again though, at the time of this review.
Thank you Andrew for the review. Also thank you for the report, we will see what we can do to fix that. I would highly recommend to use our Geometry Nodes setup for the snow (it's faster), and it's available here https://wolfstudio.io/assets/ clicking the Free Assets button and inside the Generators folder ;).
I`m on Steam version 4.3.2 too, so I just rolled back version to 4.2.6 (in steam properties) so now it work.