Hi Anders,
I think Ruth made some great points in her comments above. I read over your content and several things occur to me. If this were my project, I may consider reorganizing some of the information on the home page.
Further below in the page, you have some items that appear to be FAQ(ish). You might find an opportunity to move some of this content into another page, but create a call to action (anchored text links) to them. This helps you gain traffic deeper into your site content, so the home page asks the question, which do well. The links draw them further into the site and engages them to convert (download).
Also, I'm seeing the alt image tag text report the use of "The WordPress Security Checklist" several times. I would consider using this term once versus the three occurrences.
The strengths that you have is the keyword term in the URL, which is a huge benefit. Ruth's comments on using WP versus wordpress is insightful, because it bolsters the URL. I would scale back to find a bit more balance and you'll get there. You can always scale back up, as you see fit.
Also, here is a flag to consider:
Multiple meta description tags found!
I'm sure others may have more specific input, but this is what I would consider adjusting. The joy of SEO is research, implement, test, and modify...
Best of Luck,
andrew