Can you please tell me which app (Android or iOS) you are running?
Also, what is the app version #? The app version # may be found at the bottom of the Settings screen.
If you are running Android, please try swiping the live camera screen to view different cameras. The most recent version of the Android app includes a defect which always displays the first camera, regarldess of which camera you select. Swiping left/right will allow you to view the other cameras. We are working to release an update, which includes a fix for this.
Sorry for the inconvenience.