Hey Andre,
I checked your setup and found a JavaScript code for displaying the current year in the footer’s copyright section in the text element which was causing the issue with the scrollbar. I went ahead and replaced the code with the static year value i.e “2020”. This seems to have resolved the issue.
Can you please clear your browser’s cache completely and check the page again? Here’s the backup of your JavaScript code you had:
<script type="text/JavaScript">
document.write(new Date().getFullYear());
</script>
I’d recommend you to use the JS section to write scripts instead of writing in the text element:

Let us know how it goes!