Looking for logging into the Nextcloud Page 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 Nextcloud Page site. After that you can login as usual with your login credentials.
https://docs.nextcloud.com/server/13/developer_manual/core/theming.html
https://help.nextcloud.com/t/how-to-change-the-default-landing-page-when-you-login/29499
https://docs.nextcloud.com/server/12/admin_manual/configuration_server/theming.html
https://apps.nextcloud.com/login/
https://help.nextcloud.com/t/change-background-on-login-page/10358
https://help.nextcloud.com/t/white-page-after-login/28828
https://help.nextcloud.com/t/solved-broken-nextcloud-login-home-page-fresh-install/33917
https://nextcloud.com/
https://docs.nextcloud.com/server/14/admin_manual/configuration_server/theming.html
https://help.nextcloud.com/t/login-page-broken/31243
https://github.com/nextcloud/server/issues/9386
https://github.com/nextcloud/server/issues/11149
https://github.com/nextcloud/server/issues/13090