The function works fine in 220.127.116.11. Why do you think that your current permissions are wrong? Are you aware that the permission scheme from 18.104.22.168 to 22.214.171.124 has been changed, so the permissions have to be different now.
uncheck "Make web folders immutable"
I wont do that if you host customers on the server. This feature is required to keep your website secure, thats why it ios enabled by default.