How do I get started?

I’m trying to write excerpts for my posts. Elementor appears to only allow an auto generated excerpt from the first n words it finds on my post page. So I tried to “hack” this by writing the n first words so that it reads like an except. This doesn’t work though because elementor also picks up the title and adds this to the excerpt. So I downloaded the Advanced Excerpt plugin and activated it but I have now failed to find out how I use it, e.g., it hasn’t created a new element for me to drag onto a page? How do I get started to use it?

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