One App loads, the other does not WHY? on iOS


In the below code:
“com.telstra.treatsdev” it access my devices and keeps trying to load,but all i can see is the App trys keep loading and a black screen comes and goes evey time and my script close

But if i use “com.tedxsydney.tedxsydney”,which is another app in the device, it loads successfully

What my be the reason for not abel to load “com.telstra.treatsdev” app?

    DesiredCapabilities capabilities = new DesiredCapabilities();
    capabilities.setCapability("deviceName", "VIV-064");//deviceName is the device returned by instruments with instruments -s devices
    capabilities.setCapability("udid", "9e8bf6eeb08db0fff2113c39cc828b13e2d57da5");
    capabilities.setCapability("browserName", "");
    capabilities.setCapability("platformName", "iOS");
    capabilities.setCapability("platformVersion", "8.0");
   //capabilities.setCapability("bundleId", "com.tedxsydney.tedxsydney");  //--works fine

     capabilities.setCapability("bundleId", "com.telstra.treatsdev");

//–does not loads the App

    driver = new IOSDriver(new URL(""), capabilities);
    driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);