Steps

1. If you are using two-step verification and you get an "Incorrect password" message when you try to sign in, you can try using an app password (c.f.: Outlook)
2. Access your Google account
3. Select Security
4. Under "Sign in to Google", select Application passwords
5. /!\ You may need to log in
6. At the bottom of the page, tap Select an application, then choose the one you use then Select a device, then choose the one you use then Generate
7. Follow the instructions to enter the app password
8. > This is the 16-character code shown in the yellow bar obtained in 4
9. Press OK
10. > Note: Most of the time, you only need to enter an app password once per app or device, you don't need to remember it