Looking for logging into the App Inventor Facebook 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 App Inventor Facebook site. After that you can login as usual with your login credentials.
https://community.appybuilder.com/t/facebook-login-extension/846
https://groups.google.com/forum/#!category-topic/mitappinventortest/apps-tips--tricks/DjosVo1wZLg
https://puravidaapps.com/oauth.php
https://mirxtremapps.blogspot.com/2018/01/facebook-login-en-app-inventor.html
https://th-th.facebook.com/MITAppInventor/
https://www.facebook.com/MITAppInventor/videos/ios-for-app-inventor/10155722443476217/
https://community.thunkable.com/t/login-with-google-thunkable-appinventor/348
https://community.thunkable.com/t/help-with-facebook-extension/27359
https://eixerits.wordpress.com/2013/02/03/a-login-template/
http://appinventor.mit.edu/explore/ai2/activity-starter.html
https://stackoverflow.com/questions/25686987/how-to-code-a-log-in-page-in-app-inventor-2
https://ai2thunk.wordpress.com/2017/10/08/tutorial-simple-registerlogin-firebase/
https://rominirani.com/tutorial-mit-app-inventor-firebase-4be95051c325