The Use Selected Realm option is enabled in the application, but the login method assigned for manual login or card registration does not require realm selection. For example, local accounts or LDAP. The login methods that require realm selection are Kerberos, Active Directory, and LDAP+GSSAPI.
Try one or more of the following:
From the Embedded Web Server, navigate to the configuration page for the application:
Apps > Card Authentication > Configure
From the Advanced Settings section, clear Use Selected Realm.
Click Save.
From the Embedded Web Server, navigate to the configuration page for the application:
Apps > Card Authentication > Configure
From the User Authentication section, change the login method for card registration and manual login to Kerberos or Active Directory or LDAP+GSSAPI.
Click Save.