Looking for logging into the Owncloud No Web 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 No Web site. After that you can login as usual with your login credentials.
https://forum.owncloud.org/viewtopic.php?t=33082
https://central.owncloud.org/t/login-fails-without-error/11993
https://central.owncloud.org/t/cant-login-from-loging-page/9455
https://central.owncloud.org/t/cannot-login-with-browser-to-owncloud-server-any-more/7088
https://central.owncloud.org/t/unable-to-login-in-the-web-interface/4000
https://central.owncloud.org/t/login-im-browser-nicht-moglich/5012
https://central.owncloud.org/t/stuck-on-web-ui-login-screen/12436
https://central.owncloud.org/t/web-login-fails-silently-with-weird-log-file-entry/16712
https://github.com/owncloud/core/issues/9845
https://github.com/nextcloud/server/issues/2967
https://doc.owncloud.com/server/10.0/admin_manual/configuration/server/config_sample_php_parameters.html?highlight=trash%20bin
https://help.nextcloud.com/t/cant-login-on-nextcloud-14-web-gui/36630
https://www.youtube.com/watch?v=OZ1c4sx9-iY