Looking for logging into the Nintendo Switch 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 Nintendo Switch site. After that you can login as usual with your login credentials.
https://accounts.nintendo.com/login?lang=it-IT
https://en-americas-support.nintendo.com/app/answers/detail/a_id/15984/~/how-to-sign-in-to-a-nintendo-account
https://accounts.nintendo.com/register
https://www.nintendo.it/Servizio-al-consumatore/Nintendo-Switch/Come-accedere-a-un-account-Nintendo-1378976.html
https://www.nintendo.it/Servizio-al-consumatore/Account-Nintendo/Creazione-dell-account/Come-posso-creare-un-account-Nintendo-/Come-posso-creare-un-account-Nintendo--1085436.html
https://www.imore.com/how-link-your-nintendo-network-id-your-nintendo-account-nintendo-switch
https://www.reddit.com/r/NintendoSwitch/comments/86qs8q/update_50_no_longer_opens_browser_for_wifi_login/
https://forums.warframe.com/topic/1040925-hot-fix-login-failed-check-info-bug/
https://help.mojang.com/customer/en/portal/articles/2944851-minecraft-for-nintendo-switch-faq
http://forums.paladins.com/showthread.php?84433-Unable-to-log-in
https://answers.ea.com/t5/Technical-Issues/FIFA-19-on-Nintendo-Switch-Unable-to-login-this-account-can-t/td-p/7309437
https://www.polygon.com/2018/11/21/18107088/warframe-nintendo-switch-pc-cross-platform-play-progress
https://www.cnet.com/how-to/nintendo-switch-online-how-to-sign-up-for-the-paid-multiplayer-service/