Following are instruction on how to delete your Facebook authentication link.
You can do this by going to your Facebook profile and clicking on the Settings & Privacy > Settings > Apps and Websites page.
Select our application and click on Remove.
A confirmation pop up will be shown. Please make sure to check “Send notification to WPFutsal that you removed it. They may offer you another way to log in”. This will allow us to delete all your data from our website.
If you need further assistance please drop a message on email@example.comFC.com.