If you are trying to either connect 2FA App Store integration or resend a code for an existing one you may see the following error: Access error (two-step verification session expired. Please resend two-factor authentication code).
1. In order to update two-factor authentification or two set up 2FA integration please put your Apple ID and a password
2. After you will receive a 6 digits code on your Apple Device. Please enter the code.
3. The setup is complete!
The verification code provided by Apple for two-factor authentification is valid for 30 days. You will need to provide a new code every 30 days to continue using your Apple account on AppFollow.