Looking for logging into the Facebook Mobile Page Not Found 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 Mobile Page Not Found site. After that you can login as usual with your login credentials.
https://stackoverflow.com/questions/13366637/facebook-mobile-web-app-page-not-found
https://www.facebook.com/help/community/question/?id=560603767313430
https://www.facebook.com/help/community/question/?id=2423945095803
https://www.facebook.com/help/374104332645037
https://www.facebook.com/help/community/question/?id=10208835375908405
https://www.facebook.com/help/105487009541643?helpref=topq
https://androidforums.com/threads/facebook-page-not-found-via-chrome-not-fb-app.1216672/
https://www.shoutmeloud.com/how-to-solve-facebook-login-problem.html
https://www.jotform.com/answers/155427-Some-people-get-page-you-requested-was-not-found-
https://help.beyondindigo.com/hc/en-us/articles/205532945-Help-I-m-getting-Page-Not-Found-for-my-Facebook-Page-
https://www.sourcecoast.com/forums/jfbconnect/jfbconnect-joomla-25-support/5106-error-the-page-you-requested-was-not-found-on-iphone
https://wp-native-articles.com/blog/news/how-to-fix-facebook-apps-error-cant-load-url-domain-url-isnt-included-apps-domains/
https://community.spotify.com/t5/Accounts/Login-with-facebook-not-working/td-p/214924