Re: “My Settings” link is MISSING 
Click on ‘Private Messages’ either on top left side or near ur avatar at right side. On your right side u’ll find an option ‘My Settings’.
On top you find a link ‘Quick Link’, in drop down list choose 4th option. or
Go click on ‘Gupshup’ link on top left. At bottom of the page under ‘What’s Going on’, see blue color text 'there are currently XXX users online. click on it.