Having the same problem, created the bundleID from the developers website. But I can't create an app. The bundleID's dropdown is empty.
Also tried creating the app from the Xcode as well, this error is what I'm getting.
App Record Creation failed due to an invalid attribute. Request failed with error code "ENTITY_ERROR.ATTRIBUTE.INVALID", and reason "An attribute value is invalid. ITC.apps.validation.bundle_not_available"