I already can use public cert to login IX workplace.
However, I find this error in monitor when I enable apn in IPO.
11:45:01 1155927mS HTTP: PushNotificationAuthorizationHandler::APNP is not allowed, reset Zang Sync
11:45:01 1155927mS HTTP: PushNotificationAuthorizationHandler::APNP is not allowed, delete Public/Private key pair.