Good evening FransĀ and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We will gladly try to assist you on this topic.
After your kind invitation, I went ahead and checked out the URL you provided us with.
Based on what I am seeing, the event content is displaying in the page and not in the footer (see the following excerpt taken from the Google Chrome inspector).
https://gist.github.com/GeoffEW/b674ab4c8cc4c5e3a9e9
Perhaps what is going on is that there is no background color defined for the .single page class. This is why it might look like its in the footer (because it’s red).
Try adding the following CSS rule and let me know if that helps
https://gist.github.com/GeoffEW/eb779c0b252127b9ef52
Have a great day!
Geoff B.