Simple and working

I like this plugin because it is simple and not creating failed login event like the 2FA option from WordFence. Do not get me wrong, WordFence is a very good plugin with amazing functionality, just the 2FA part is inconvenient. In WordFence, if I do not enter the code in the password field, I will get a failed login event if I am entering the code in a separate window. The Google Authenticator login window solves this problem by adding the Google Authenticator Code field into the login page. This creates a little confusion for novice users, but a small message label or check-mark can eliminate the confusion.