Looking for logging into the To Elgg From External Site 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 To Elgg From External Site site. After that you can login as usual with your login credentials.
https://elgg.org/discussion/view/1513017/login-from-external-site
https://elgg.org/discussion/view/842864/using-elgg-for-user-authentication-in-external-site
https://elgg.org/discussion/view/508429/login-form-on-external-page
https://elgg.org/discussion/view/472499/login-from-external-web-app
https://elgg.org/plugins/804349
https://elgg.org/bookmarks/view/482047/the-elgg-community-login-form-in-an-external-site
https://elgg.org/discussion/view/359958/login-from-external-site
https://elgg.org/discussion/view/878090/use-elgg-webservices-api-to-login-user
https://elgg.org/discussion/view/1846758/login-with-authgettoken-in-external-site
https://elgg.org/discussion/view/2470361/set-authentication-w-cookie-with-external-system
https://elgg.org/search?q=external+services&search_type=all
https://elgg.org/search?q=external+site&search_type=all
https://elgg.org/search?q=external+site&entity_type=object&entity_subtype=discussion&limit=10&search_type=entities