Looking for logging into the Phpbb Not Working 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 Phpbb Not Working site. After that you can login as usual with your login credentials.
https://www.phpbb.com/community/viewtopic.php?f=46&t=671905
https://www.phpbb.de/community/viewtopic.php?t=238179
https://www.phpbb9.de/phpbb-tipps-anleitungen/login-probleme-faq-t20304.html
http://forums.mozillazine.org/viewtopic.php?f=38&t=516066
https://www.mediawiki.org/wiki/Extension_talk:PHPBB/Users_Integration/Archive_1
https://docs.oneall.com/plugins/guide/social-login-phpbb/3.1/
https://www.axew3.com/w3/forums/viewtopic.php?t=833
https://stackoverflow.com/questions/18030628/external-login-not-working-in-phpbb?rq=1