Website is not displayed

The question I am left with is why for example the website is not displayed by Brave ?
(Not via a computer and not via a mobile either).

Thanks for reporting, seems to affect all Chromium and webkit (Safari) browsers. Maybe known to Chromium devs but have logged a issue report for it

Thanks for your comment and sorry for my late response, but I am following the page link you sent me and your efforts are much appreciated.
Meanwhile, I also checked with Mediawiki and the problem with their latest version 1.35.1 are not unknown.
Best regards,