Looking for logging into the Mozilla 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 Mozilla site. After that you can login as usual with your login credentials.
https://support.mozilla.org/users/login
https://addons.mozilla.org/firefox/users/login
https://addons.mozilla.org/nn-no/android/users/login
https://github.com/mozilla/login.webmaker.org
https://github.com/mozilla/login.webmaker.org/blob/master/env.sample
https://backpack.openbadges.org/backpack/login
https://backpack.openbadges.org/
https://forum.fiverr.com/t/impossible-to-login-to-fiverr-with-mozilla-firefox/179850
https://play.google.com/store/apps/details?id=org.mozilla.firefox&hl=en_US
https://books.google.by/books?id=NwK5CgAAQBAJ&pg=PA44&lpg=PA44&dq=mozilla+login
https://www.lansweeper.com/knowledgebase/enabling-or-disabling-login-prompts/
https://books.google.by/books?id=EyLiIBMNW-wC&pg=PA105&lpg=PA105&dq=mozilla+login
https://getpocket.com/login