Hi Shubham,
Since it is asking you to enter code , you might have configured this perviously but the account is not available in your mobile.
To fix this , raise a support ticket to Mendix by asking them to reset Google Authenticator for your account
Hi Shubham,
You can refer to this link, to know more about the two factor authentication thing
https://docs.mendix.com/developerportal/deploy/two-factor-authentication/
Hope it helps