iOS IKEv2 - User-authentication - Username and Password missing

[ChrisStain87]

https://docs.microsoft.com/en-us/mem/intune/configuration/vpn-settings-ios#ikev2-settings

Under "Authentication method":

Certificates Username and password (User authentication only) Shared secret (Machine authentication only)

If user authentication is chosen, only certificate is offered. Username and Password is not visible!