Looking for logging into the Can't To Betaclient Lol 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 Can't To Betaclient Lol site. After that you can login as usual with your login credentials.
https://support.riotgames.com/hc/de/articles/201761944-Schwierigkeiten-beim-Login
https://boards.na.leagueoflegends.com/en/c/bug-report/Uahq0i0n-cant-connect-to-the-beta-client
http://forums.euw.leagueoflegends.com/board/showthread.php?t=1118936
https://boards.euw.leagueoflegends.com/en/c/help-support-en/LX1AyxIP-i-cant-login-in-client
https://boards.euw.leagueoflegends.com/en/c/bug-reports-eu/OqjmLLzv-i-cant-play-lol-anymore
https://boards.euw.leagueoflegends.com/en/c/help-support-en/Pk4nwNuu-i-cant-resize-the-lol-client-and-a-bit-of-the-right-side-of-the-client-is-not-shown
https://boards.euw.leagueoflegends.com/en/c/alpha-client-support/E4A64EHO-i-cant-download-beta-client
https://boards.na.leagueoflegends.com/en/c/help-support/m2F9kbKU-having-issues-patching-73-click-here?show=rundown
https://boards.euw.leagueoflegends.com/en/c/bug-reports-eu/9jYukBz0-how-can-i-uninstall-the-new-beta-client
https://boards.euw.leagueoflegends.com/en/c/alpha-client-support/dR289zPF-beta-client-stuck-in-loop-download-help
https://boards.euw.leagueoflegends.com/en/c/alpha-client-discussion-en/huWoNWMu-beta-client-suggestions-complaints-let-us-gather-all-suggestions-in-one-place
https://na.leagueoflegends.com/en/news/game-updates/features/client-open-beta-update-1
https://www.reddit.com/r/leagueoflegends/comments/5dylku/beta_client_bug_megathread_1120/