When setting up the second factor in the Self-Service-Portal as a one-time password (TOTP) for the apps "privacyIDEA Authenticator" or "2FA Authenticator" only via an iPhone or an iPad certain settings are required under iOS or iPadOS. Before the settings can be edited, one of the above-mentioned authenticator apps must be installed on the respective device.
1. Select "Settings".
2. Select "Passwords" in the settings.
3. If set up, please carry out the authentication (Touch ID, Face ID) to edit the password settings.
4. Select "Password options" in the password settings.
5. Under "SET UP VERIFICATION CODE USING:", select the previously installed authenticator app ("privacyIDEA Authenticator" or "2FA Authenticator") and close the settings.