Turn Off Two Step Verification / Generate App Password for Gmail Account
Follow the Procedures to Generate Application Password for Gmail Account and Turn Off 2-Step Account Verification
How to Turn Off Two Step Verification for Gmail Account
Follow procedure to Disable 2-Step Verification from Gmail Sign-In & Security Settings
Then Go to "Two Step Verification"
Then Google prompts with Login window . Enter valid "Login Password "
Then Enter valid "6-digit verification code" sent to mobile number you specified.
Now simply "Turn Off" 2-Step verification
How to Generate App Password for Gmail Account
Follow procedure to Generate an Application Password For Gmail Sign-In & Security Settings
Scroll down to the Signing in to Google section. If the Two step verification is enabled, you will preview an option of App passwords. Click on App passwords otpion.
Enter your Gmail account password to Generate Application Password.
Click on the Select app drop-down and choose Other (Custom Name) option
Enter the Name of the application, say, SysTools Gmail Backup. Then, click on Generate option.
A window pops-up to your screen showing the App password. Save the password shown in the Yellow box somewhere at a known place. Click on Done button.
Now, use this password to login your account on the SysTools Gmail Backup application