Ok this makes sense, I was trying to edit the Contact page. Strangely, I did finally get it to load in Elementor and was able to add content. But I’ve changed it back to the WP editor now so I don’t break anything.
Could you please explain what is meant by a demo page? I already edited the About page in Elementor to add some content. It seemed to work fine. Do you mean that I should not have done this, but rather added a new page called About and added my content there?
I’m not 100% sure I understand the steps to “assign” pages but I will try to work through it as you’ve described and see if I can figure it out. Thank you