To activate Google Authenticator, follow the below steps
Download the Google Authenticator app from the Play Store or Apple Store
Open the app to find the '+' sign in the bottom right corner.
You can choose to use the scan option or the setup key option.
When you enable the Google Authenticator option on the Netcore Email API panel, a pop-up with a QR code and a setup key are shown to you. Using either of them is to save the configuration on your device.
Enter the 6 digit code generated on the Google Authenticator app to enable the 2FA via Google Authenticator.
Note: Please save a copy of the QR code/ setup key as it's only generated one time, If you lose the device or switch phone you need to use the barcode to get access.
If you haven't saved It and require resetting the 2FA method you need to email firstname.lastname@example.org.