Unable to Setup Google Account on Android 2.3
I had the same problem and I solved it this way:


Log in here using a web browser .
On Login and Security, at the bottom of the page there's an option "Allow less safe apps" which would be set as disabled. Set it to enable and now you can log-in using your device.


  Allow less secure apps: ON
  
  Some non-Google apps and devices use less secure sign-in technology, which could leave your account vulnerable. You can turn off access for these apps (which we recommend) or choose to use them despite the risks.



Note: The words might be a little different as I saw that Google page in Portuguese, but the option should relatively be at the same position on the page.