With your homepage set to a portfolio or a custom layout, the blog moves to its own page. Reel uses WordPress’s standard Posts page mechanism for this.
The page now lists your latest blog posts with pagination — its content area is ignored, so leave it empty.
Blog listing options live in WPZOOM → Theme Options → General → Blog Posts — the featured image, excerpt and its length, and the post meta shown for each entry:

Single post display is controlled in the Single Post Options section on the same page.
Tip: to change the summary shown for a post, use the post’s Excerpt field — otherwise the theme picks the first words of the content automatically.
See also: