just installed eshop for testing, but no add to cart button coming up in posts

I really think I will like this plugin and it might save me from the way I was building.. so I started a brand new test site

https://www.nomadikal.com/wordpress-1/

I will try not to ask to many questions, but just one to start is I have it all installed and I am able to make a product post, but on the frontend of the site there is no add to cart button or anything like this.

… I think once I get the idea of how to start with this I will figure more out.

this post for instance https://www.nomadikal.com/wordpress-1/?p=10

why does a user see no add to cart button ?

Thanks everyone !