add sidebar to archive blog with elementor

I can't show you my site because I'm building it with Flywheel.

I don't know if you can help me or if I need Elementor, I've emailed them but haven't heard back yet, of course it's Sunday, anyway...

I'm building a one-page static site with a blog. I'm using Elementor Pro and the blog is much nicer looking, but there is no sidebar. I have to use the archive blog to make it as my Post Page, otherwise when I try and edit it with Elementor Pro I get this message:

"Sorry, the content area was not found on your page. you must call the 'the_content' function in the current template in order for Elementor to work on this page."

I'm not a developer so that means nothing to me. Anyway...

when I create the Archive Blog there is no sidebar and I don't know if I can use one, but I would think I could. But I don't know if there's something I need to do with your theme or not - and you have created an awesome theme.