Looking for logging into the Cloud9 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 Cloud9 site. After that you can login as usual with your login credentials.
https://c9.io/login
https://c9.io/signin.html
https://aws.amazon.com/jp/cloud9/
https://aws.amazon.com/jp/cloud9/getting-started/
https://www.cloud9.gg/
https://qiita.com/tu-kun/items/d7b4f1fa19cc93bc5b75
https://qiita.com/icck/items/7705ef6871e261d6535e
https://www.cloudninerealtime.com/virtual-server-login/
https://teratail.com/questions/78270
https://teratail.com/questions/125977
https://techacademy.jp/magazine/6168
http://hak-prg.hatenablog.jp/entry/2018/03/04/155816
https://stackoverflow.com/questions/53352846/cloud9-ide-heroku-login