twitter wont let me make my tweets private ?

[Liam]

so im trying to make my twitter private so random people can't see my tweet and twit pic's

i go to setting, and account and then at the bottom it says
Tweet Privacy Protect my tweets

Only let people whom I approve follow my tweets.
If this is checked, your future tweets will not be available publicly. Tweets posted previously may still be publicly visible in some places.

so i click the little tick Button to make my twitter private and click save it asks me to type my password in and i do so, but my twitter isn't private still

help? thanks in advance
yes iv tryed doing that

[Miaaaaa87]

How do you know it's not private? Have you tried logging off and looking at your profile?