Looking for logging into the Line Platform 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 Line Platform site. After that you can login as usual with your login credentials.
https://blog.feedmatic.net/linelogin
https://developers.line.biz/line-login/overview
https://engineering.linecorp.com/ja/blog/introducing-the-line-login-platform/
https://qiita.com/YuitoSato/items/a9e613370f418d5c322c
https://webtan.impress.co.jp/e/2018/01/29/27706
https://www.eda-inc.jp/line-login-platform-for-ios/
https://yokotashurin.com/sns/line-login-platform.html
https://socialplus.jp/case/gdo_line
http://milk0824.hatenadiary.jp/entry/2016/04/08/021052
http://juggly.cn/archives/152120.html
https://www.itmedia.co.jp/news/articles/1506/30/news122.html
http://nlab.itmedia.co.jp/nl/articles/1506/30/news144.html
https://www.feedforce.jp/release/12694/