Looking for logging into the Facebook Business Shared 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 Business Shared site. After that you can login as usual with your login credentials.
https://www.facebook.com/business/a/migrate_your_shared_accounts
https://www.facebook.com/help/community/question/?id=10207864201575768
https://de-de.facebook.com/business/help/1676733802590358
https://www.business2community.com/facebook/should-your-facebook-business-page-share-a-login-with-be-created-by-your-facebook-profile-0346413
https://www.quora.com/How-do-I-create-a-Facebook-management-account-for-business-pages
https://www.youtube.com/watch?v=4kvJjkOATVQ
https://www.socialmediaexaminer.com/how-to-use-facebook-business-manager-a-complete-guide/
https://allfacebook.de/fbmarketing/facebook-business-manager
https://support.foursquare.com/hc/en-us/articles/201065890-What-information-is-shared-when-I-connect-my-Facebook-account-
https://techcommunity.microsoft.com/t5/Azure-Active-Directory-Identity/Azure-AD-now-supports-managing-shared-company-accounts-for/ba-p/243814
https://help.instagram.com/218638451837962?helpref=faq_content
https://www.theguardian.com/technology/2018/dec/19/facebook-shared-user-data-private-messages-netflix-spotify-amazon-microsoft-sony
https://www.cnbc.com/2018/04/10/how-to-see-if-my-facebook-data-was-shared.html