Looking for logging into the Lol New Client 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 Lol New Client site. After that you can login as usual with your login credentials.
https://support.riotgames.com/hc/en-us/articles/201761944-Login-Issues
https://boards.euw.leagueoflegends.com/de/c/melde-einen-bug/2Qjhqm4M-client-login
https://boards.euw.leagueoflegends.com/de/c/melde-einen-bug/9FaMfarn-client-login-seit-langem-zerstart
https://boards.na.leagueoflegends.com/en/c/gameplay-balance/Lt0YeFYn-you-can-freely-change-your-log-in-screen
https://boards.euw.leagueoflegends.com/en/c/alpha-client-discussion-en/wKtKvdpL-login-screen-location-in-the-new-client?show=new
https://www.nicoco007.com/lol-auto-login/
https://www.spieletipps.de/fragen-12531813-lol-client-login-error/
https://aminoapps.com/c/league-of-legends/page/blog/how-to-change-login-theme-legacy-client/1qU6_u1d1P5EqYX6JoVwzvKg3jEKww
https://gaming.stackexchange.com/questions/328360/cannot-login-to-league-of-legends-client-after-8-4-update-patch
https://boards.euw.leagueoflegends.com/en/c/help-support-en/KNEeq99N-client-just-shows-black-screen
https://boards.euw.leagueoflegends.com/en/c/help-support-en/ulbKtjiW-stuck-on-league-of-legends-client-login-status-loading-but-somehow-online-in-the-game
http://www.rediscussed.com/league-of-legends-new-client-login-screens/
http://support.lol.garena.com/en_SG/articles/406