We created our first app in iTunes Connect 1 hour ago. We entered some information for the app. After 1 hour, when we were trying to create another app, we saw the first app disappeared from iTunes Connect and we can't find it any more. Then we checked Apple Developer Member Center, and we can still find the first app's Bundle ID there. But we cannot use it to create apps anymore in iTunes Connect.
This is our first time to use Apple Developer Program and iTunes Connect. So we don't know what happened to our account.