Looking for logging into the Owncloud Google 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 Owncloud Google site. After that you can login as usual with your login credentials.
https://owncloud.org/news/introducing-oauth2-secure-authorization-flow/
https://doc.owncloud.org/server/10.0/admin_manual/configuration/files/external_storage/google.html
https://qiita.com/yamagami2211/items/ad7ae5d4c2e50e289672
https://github.com/nextcloud/server/issues/5955
https://superuser.com/questions/519515/owncloud-openid-user-authentication
https://wna.jp/support/owncloud/9-external_storage/
https://www.youtube.com/watch?v=YIwp8PZNpWE
https://www.tecmint.com/customize-owncloud-theme/
https://owncloud.jp/feature
https://play.google.com/store/apps/details?id=com.owncloud.android&hl=ja
https://help.nextcloud.com/t/enable-sso-with-oauth-2-for-azure-ad-and-google-apps/197
https://bitnami.com/stack/owncloud/cloud/google
https://www.gwdg.de/storage-services/gwdg-owncloud