Cannot scroll far enough in Learnpress

I’ve installed Learnpress and created some lessons.

When a lesson has more than a page of content, there is a scroll bar but it stops just short of completing the Comments box.

As this is a first draft of the course, I will be replying on comments to improve it.

One other problem generally is that I find it difficult to alter the page template. As you can see from the link below, the title text is smaller than the body text.

I am using the excellent Neve theme.

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