Short code not working

Using wp.com and on this page below I am adding a short code to display the posts with the tag “reviews”

https://dirtology.wordpress.com/movie-reviews/

Short Code:

[display-posts tag=”reviews” posts_per_page=”20″ display_posts_shortcode_no_results=”No posts as of yet.” orderby=”title” include_excerpt=”true”]

Even though I have two pages with the reviews tag(https://dirtology.wordpress.com/tag/reviews/), it only shows one on the page above.

What am I missing?