When I disable Front end protection in Admin Tools, the problem goes away.
If I delete the .htaccess the problem goes away.
If I use the standard Joomla .htaccess, the problem goes away.
If I add an exception (specific filename) in Admin Tools Server Protection, the problem goes away.
Any ideas please what is causing this?
the URL is https://www.empoweringparentstogether.org.uk/
Try accessing files pdf-icon.png or ept-membership-form.pdf
Thanks,
Eric