Looking for logging into the Gnome After Sync 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 Gnome After Sync site. After that you can login as usual with your login credentials.
https://askubuntu.com/questions/967137/calendar-constantly-requiring-google-authentication-on-17-10
https://ubuntuforums.org/showthread.php?t=2359809
https://www.omgubuntu.co.uk/2017/04/sync-gnome-shell-extensions-google-chrome
https://wiki.gnome.org/Projects/GnomeKeyring/SecurityFAQ
https://www.reddit.com/r/gnome/comments/a57iqa/syncing_icloud_caldav_with_gnome_calendar/
https://gitlab.gnome.org/World/fractal/commit/889383dbf87291f0385e55761fc6f1374f6fea82
https://wiki.archlinux.org/index.php/GNOME/Evolution
https://central.owncloud.org/t/linux-client-does-not-save-password-always-authorizes-through-the-browser/13215
https://ask.fedoraproject.org/en/question/98097/i-cant-login-after-upgrading-to-fedora-25/
https://bugs.launchpad.net/bugs/322827
https://medium.com/@glmdev/onedrive-sync-for-linux-ubuntu-2bcbf6777ee4
https://forum.antergos.com/topic/6904/google-calendar-not-showing-up-in-gnome-calendar
https://bugs.launchpad.net/bugs/1766137