Error to activate 2FA "Invalid Pin Code"

Hi,

I’m having problems to activate 2FA with Google Authenticator. I have scanned the QR code and when i have to register my device with the pin, i have gotten “Invalid code pin” message.

I have checked the workaround describe in the following link but i can’t register my device with 2FA:
https://docs.gitlab.com/ee/user/profile/account/two_factor_authentication.html#troubleshooting

Regards.