You need to sign in to Read&Write to access the features. To sign in to Read&Write:-
1 Click the icon on the top of your Read&Write toolbar
2 Click on the Show more... button
3 Click the Sign in with Facebook button
4 Enter your Facebook log in details and click on Log In
5 Click on the Continue as button to accept the permissions.
When the sign in is successful you’ll see the message below. Read&Write is now ready to be used.