First of all, you need to go into link developers and create an account. Also, you need to click on tool/explorer. After that, you need to do to my applications and drop down on the upper right corner & choose to Add a new app. Now you need to again go back in the same link developers. Join Facebook Customer Service 1-855-436-8666 for more info. More read https://www.monktech.us/facebook-customer-support-number.html