Looking for logging into the Tekkit 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 Tekkit site. After that you can login as usual with your login credentials.
https://www.technicpack.net/login
http://forums.technicpack.net/topic/4790-took-to-long-to-log-in-on-my-own-server/
https://www.technicpack.net/status/6494?page=4
http://forums.technicpack.net/topic/320815-want-to-sign-in-with-old-minecraft-account-mojang-wont-work/
https://www.minecraftforum.net/forums/servers-java-edition/pc-servers/711097-tekkit-server-problems-login-failed-bad-request
https://gaming.stackexchange.com/questions/223078/cant-login-to-technic-launcher
https://www.reddit.com/r/tekkit/comments/59l0ln/cant_log_in_to_server/
https://tekkitclassic.fandom.com/wiki/Tutorial/Login_System
http://support.msmhq.com/discussions/problems/699-tekkit-bad-login
https://ideas.lego.com/projects/75629
https://forum.craftersland.net/topic/31529-login-password-for-tekkit-craftersland-forgotten/?do=getNewComment
https://stickypiston.co/account/knowledgebase/64/Failed-to-Login-Bad-Login-error.html
https://mc-complex.com/tekkit/threads/bad-login-how-do-i-fix.111/