Looking for logging into the Ubuntu Install 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 Ubuntu Install site. After that you can login as usual with your login credentials.
https://askubuntu.com/questions/103896/live-cd-asks-for-a-username-and-password
https://askubuntu.com/questions/957653/cant-login-after-clean-install/957662
https://www.faqforge.com/linux/install-the-ubuntu-login-screen-on-linux-mint/
https://serverfault.com/questions/26185/whats-the-default-username-and-password-for-an-ubuntu-live-cd
https://praxistipps.chip.de/ubuntu-login-funktioniert-nicht-was-tun_38592
https://www.quora.com/What-is-the-default-password-for-Ubuntu-16-04-LTS
https://ubuntuforums.org/showthread.php?t=2369435
https://tutorials.ubuntu.com/tutorial/try-ubuntu-before-you-install
https://ubuntu-mate.community/t/initial-login-and-password/3243
https://devcenter.heroku.com/articles/heroku-cli
https://wiki.ubuntuusers.de/LightDM/
https://forum.ubuntuusers.de/topic/ubuntu-18-04-bleibt-beim-login-haengen/
https://www.reddit.com/r/Ubuntu/comments/8fo588/i_cant_login_after_installing_1804/