If you're logged in on multiple devices and unable to view the Big Brother Live Feeds, please log out of your CBS All Access account from all devices. Then log in again on the one device from which you wish to view the feeds. This should resolve the issue.
Please keep in mind that watching the Big Brother Live Feeds on multiple devices simultaneously could compromise the quality of the feed and cause video buffering or choppiness. This is because your data bandwidth is dependent on how many connections (including WiFi and 3G/4G) are currently using a single cell tower. To resolve this, consider using only one device at a time while on a single Internet connection.