It works fine for me on Windows 11. How does the screenshot look? Did you delete all your data by chance? I started again on the page you mentioned: https://www.supercamps.co.uk/ and see if it works. If not, I recommend that you deactivate some extensions one by one, some of them may be blocking the page. Otherwise, try in settings/more tools/new profile without extensions and see if it worked or not.
I can’t hide it because it contains everything else, but the name suggests it might be a problem?
The cookieOverlay element does correctly have display: none !important applied to it but my inputs are still not getting through. There are no errors in the console.