If it shows "Google Authentication Code Error" when you input google authentication code, please follow the instructions below to solve the problem:
1. Synchronize the time (hours) on your mobile phone (the Google Authenticator application) and the computer. For the Android user, please synchronize the time(hours) in the Google Authenticator app.
2. Browse in the incognito mode with Google Chrome.
3. Clear up browser cache and cookies.
If the above methods cannot accomplish your requirements, we suggest you initiate the resetting process of "Google Authenticator": https://support.bitsoda.com/hc/en-us/articles/360034273953