First time using Poster 2 so I’m sure the issue’s I’m having are my fault. lol
My Meta description and canonical are the same for all my blog pages. I was reading in the docs that by default Poster should overwrite these values so I’m not sure what I’m missing or doing wrong.
You’re using SEO helper on that page, so most probably this is overwriting the meta description inserted by Poster. Try again without it on the blog page.