Why does Google's app-passwords ALWAYS wrong?

After I have enabled the two-step-authorization, I caot login my Gmail via Thunderbird anymore!

And then, I have noticed that there is a way called app-passwords.

So, I try it, but it not work.

Thunderbird told me that "The Useame or Password is invalid."

Screenshoot

And in the app-password control page , it sames that the password have never been used!(The last-login field is "-")

Screenshoot

So, what can I do to make my Thunderbird work?

Shall I cancle the two-step-authorization?