Display image error for unity game on learnpress

Hi, I have unity games uploaded on my FTP, the link to which is in the lesson. I had to update some games and now the new games are not displaying the image-link to the game to click on.

Wondering if anyone can help with this. This is a link to one that is working:

http://lasoglearning.com/courses/bigigobrea/lessons/lesson-5-making-decisions-a-2/

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