Nav bar and course title on top of each other

Hello, I’m using a Pix & Hue theme that I love and I don’t want to change it. But as this is not an e-learning theme I’m having a little issue on my lessons page.

As you can see here: https://prnt.sc/106uz3d

The course title and the theme nav bar are both showing up and it’s a mess. I don’t mind that the nav bar shows up, but in another line, above the course title.

I found this article about chanching courses lessons page so they show up as a regular page in your site and not without header, footer and so on: https://www.ugenegrg.com.np/learnpress-lesson-template-changes/

I almost solved the problem with this tips, but my learnpress header.php template doesn’t have the code <div class=”content-item-scrollable”> and I don’t know if that’s the issue or not but when I make the changes on that article I loose lessons scroll. So I can see it all really beautiful but I can’t scroll to read what else is on the page.

Any clue to solve this? ??