Looking for logging into the Drupal 7 Act On 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 Drupal 7 Act On site. After that you can login as usual with your login credentials.
https://www.drupal.org/project/login_as_other
https://www.drupal.org/forum/support/post-installation/2008-05-27/log-in-as-another-user
https://drupal.stackexchange.com/questions/21681/how-to-logout-all-active-users
https://drupal.stackexchange.com/questions/108703/how-to-redirect-user-to-user-login
https://drupal.stackexchange.com/questions/220602/why-does-the-login-destination-module-not-redirect-to-page
https://drupal.stackexchange.com/questions/195651/drupal-flag-the-node-after-login
https://drupal.stackexchange.com/questions/72215/sharing-authentication-within-two-drupal-distributions
https://drupal.stackexchange.com/questions/63704/open-user-login-in-lightbox
https://drupal.stackexchange.com/questions/26981/first-time-user-login-page-redirect
https://drupal.stackexchange.com/questions/32804/redirect-anonymous-user-to-login-page
https://drupal.stackexchange.com/questions/223095/redirect-anonymous-user-to-login-page
https://drupal.stackexchange.com/questions/165007/how-to-add-login-form-to-the-access-denied-page/165014
https://drupal.stackexchange.com/questions/247150/cannot-login-after-drupal-7-migration