Breadcrumb not showing on blog detail page

Hi,
I have installed the plugin (gratefully!) on all pages of my site including my custom “blog” page.
The only issue I am having is that on when I click on any of the blogs in the blog list, the detail page does not have the breadcrumbs.

In other words, there are breadcrumbs on:
/blog/

but no breadcrumbs on:
/pen-supports-great-projects/

Any help would be appreciated!
Thank you.
Jim S

https://www.ads-software.com/plugins/surbma-yoast-breadcrumb-shortcode/