Preview Changes Error

Hi! Question! I am trying to create a website via WordPress and I am using a Pinnacle theme called Eco Friendly Pro. I am using Elementor to edit and I am also using free templates. When I edit via Elementor, everything is fine – however, when I then click on ‘preview changes’ everything that I have created via Elementor is gone. I can only see what I have edited with just the regular Eco Friendly Theme (aka just the header and footer essentially. I have never created a website before so this is all new to me – what am I doing wrong?

Note: Elementor is up to date, as well as all of my plugins. I also tried using another theme to see if my edits show up but nothing.