Testimonial shows with the direct link but not anywhere else???

I thought I’d use the JetPack testimonial feature to replace my page of ‘what client’s say’. Maybe I shouldn’t use JetPack.

I created the first testimonial after following procedure to activate it in JetPack plugin. I can see this through: https://mindtechnology.com/blog/?testimonial=philip-r-berber-founder-and-ceo-of-cybercorp
BUT the text looks wrong compared to all other texts on other posts???
BUT this just goes to blog: https://mindtechnology.com/blog/?testimonial???

Big question: How do you find the testimonials? Where is the normal place to find them once you’ve posted one testimonial?

Per documentation, I added the following in the text field in that testimonial post:
[testimonials columns=1 orderby=title]
Same results

What is the advantage to using testimonials from JetPack vs creating my own pages?

Thanks for your time and answers…

The page I need help with: [log in to see the link]