Looking for logging into the Heroku 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 Heroku site. After that you can login as usual with your login credentials.
https://id.heroku.com/
https://teratail.com/questions/158638
https://teratail.com/questions/158511
https://qiita.com/Arashi/items/b2f2e01259238235e187
https://qiita.com/hama1/items/a86fde879326e5feb9ef
https://qiita.com/pugiemonn/items/0e69b7a29a384b356e65
https://www.terrasky.co.jp/blog/2017/170307_002013.php
https://stackoverflow.com/questions/53352846/cloud9-ide-heroku-login
https://www.nnn.ed.nico/questions/8951
https://github.com/heroku/cli/issues/1054
http://railsgirls.jp/heroku
https://trailhead.salesforce.com/ja/content/learn/modules/heroku_enterprise_baiscs/your_first_deployment
https://masatoshihanai.com/php-line-bot-02/