Looking for logging into the Facebook Button site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Facebook Button site. After that you can login as usual with your login credentials.
https://www.facebook.com/
https://stackoverflow.com/questions/13772888/where-to-get-facebook-login-button
https://medium.com/@KentaKodashima/ios-facebook-login-button-fc715818b410
https://wordpress.org/support/topic/change-facebook-login-button-to-continue-with-facebook/
https://riptutorial.com/android/example/14819/create-your-own-custom-button-for-facebook-login
https://www.observepoint.com/tag-database/facebook-login-button/
https://support.backflipstudios.com/hc/en-us/articles/220933547-No-Facebook-Login-Button-in-the-Social-Menu
https://www.npmjs.com/package/react-social-login-buttons
https://www.reinisfischer.com/facebook-login-button-drupal-website
https://www.socialmediaexaminer.com/how-to-use-facebook-login-on-your-website/
https://github.com/facebook/react-native-fbsdk/issues/439
https://androidclarified.com/android-facebook-login-example/
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=9151