Logging into your Bitazza account using 2FA may fail if the Google Authenticator app is not properly synced.
To ensure that you have the correct time settings: 


Android:
- Navigate to the Google Authenticator main menu
- Go to Settings > Time correction for codes > Sync now
The app will confirm that the time has been synced on the next screen. You should now be able to use your verification codes to sign in. The sync will only affect the internal time for your Google Authenticator app, and will not change your device's Date & Time settings.  


iOS:
- Navigate to Settings on your iPhone
- Go to General > Date & Time
- Diable Set Automatically option and re-enable it again.
- Reboot your device 


If you continue to experience issues regarding 2FA, kindly contact our support team and we will assist you further. 


https://bitazzahelp.freshdesk.com/a/solutions/articles/44001757491?lang=en