First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google Authenticator app and tap the plus sign. Record the 2FA code/key. Whenever you're ...

I installed the app on my new smartphone, but the verification codes used for logging in are not appearing. I plan to trade ...

You can have a strong password and still lose an account. That is because your password is only one part of the login process ...