OK I visited the links you posted to me above and I saw that my cPanel’s Hotlink options contained the code:
(%0A|%0D|%27|%3C|%3E|%00) \.opendirviewer\. ^.*demo5.local.* users\.skynet\.be.*
which was something I had to remove. I managed to remove it and switched back the rights of the Root .htaccess to 404/644 and I still cannot get to create the secure.htaccess file. I get the following error:
501 Method Not Implemented
GET to /wp-admin/admin.php not supported.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
Thing is, I tried commenting the “Options -Indexes” and the “DirectoryIndex” as stated on the 500 error guide but I couldn’t get to update the current .htaccess. Any ideas?