By enabling Authenticator application, You will be questioned to enter the verification code displayed around the authenticator application when logging in. To make use of this option, you must setup the authenticator app in advance. For anyone who is unable to log in with 2-stage verification on account of predicaments https://hectorwtpke.azzablog.com/36215782/the-smart-trick-of-line-oa-that-nobody-is-discussing