Tag list problem in Helium

Hi
I've installed grav-gantry5-particle-blog-tags in my helium theme based site.
The tags get listed as links, but the links don't lead to the relevant pages. Any ideas what could be wrong?
Thanks for any help.
Regards
David

Make sure that every page has a category "blog" and a tag (architecture, landscape etc).
In other words every page must have the same category "blog" and different tags
The blog tags particle works only if you tick "blog" as blog root. (at least for me)
Also pay attention to capital letters (Blog or blog, be consistent with that).
Important: you must be interested also in the "blog-archives" particle of p.hibbits
here
and the Archives GRAV plugin MUST be installed