Looking for logging into the Piwik 3.0.1 Kein 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 Piwik 3.0.1 Kein site. After that you can login as usual with your login credentials.
https://forum.matomo.org/t/nach-upgrade-auf-3-0-kein-zugang-mehr/22194
https://matomo.org/changelog/piwik-3-0-1/
http://deutschsprachiges22.rssing.com/chan-57476044/all_p18.html
https://github.com/matomo-org/matomo/issues/11059
https://github.com/matomo-org/matomo/issues/11312
https://github.com/matomo-org/matomo/issues/11156
https://de.wikipedia.org/wiki/Matomo
https://www.malnefrage.de/frage/piwik-leere-seite-alles-weiss-nach-update/
https://www.domaintechnik.at/matomo-software-updates.html
https://forum.shopware.com/discussion/39561/wie-bindet-man-piwik-in-shopware-5-2-3-ein
https://www.exploit-db.com/exploits/41358
https://de.wordpress.org/plugins/wp-piwik-notifier/
https://addons.prestashop.com/de/analysen-statistiken/23217-piwik-free-web-analytics.html