Sometimes, file and folder permissions can get confused, for example, 644 will revert to 664 preventing files from being read by the public.
The SSH commands below will reset the permissions for a users folder so they can be read by the public but with security permissions.
find /home/___USERNAME__/public_html/* -type d -exec chmod 755 {} \;
find /home/___USERNAME__/public_html/* -type f -exec chmod 644 {} \;