Blog Excerpts Do Not Show Up

Could you please try:

a) make sure there’s no “Read more” tag in the very beginning of the post;
b) if you use WPBakery page builder in this post, switch to the Classic editor and remove WPBakery wrappers;
c) try to fill-in post “Excerpt” field.

Fig. 1. Excerpt

Fig. 1. Excerpt

See here for more details.