Welcome to access token generation for current wordpress plugin(version > 1.0).If you want to generate token for previous version 1.0,
view doc here for the link. To generate token you have to create facebook application first, view doc here for all the details.
After you do so enter the app id and secret key in the boxes below and press submit.Please enter correct app id and
secret key else you would get error like "error validating application...."
your facebook application id:

your facebook application secret key: