Outh provides the authentication with a username/password (Db Authentication) as well as the login with a social network account. The social network authentication can be setup in EXTENSIONS \ ONEALL SOCIAL LOGIN.
My question is whatever I can login to ACP with DB PASSWORD if I fill the fields to login via Outh or there is a way to revert to DB in case the keys or CURL does not work ?
Regarding the extension at witch the information provided in the language file refers there is only for 3.1.x since probably their developer is on PHP 5.3.3
OneAll Social Login
Social Login for phpBB allows your users to login and register with 30+ Social Networks like for example Twitter, Facebook, LinkedIn and Google+
https://docs.oneall.com/plugins/guide/s ... gin-phpbb/