When you connect a device to Caavo, you configure the HDMI port for that specific device. When you remove a device from Caavo, you will be prompted to Remember or Forget that device. Choose Remember if you plan on reconnecting the device back to the same port on Caavo. If you choose to Forget the device, you will need to setup the device again if/when it is reconnected.
If you choose "Remember" but decide to either use a different port or not reconnect the device, go to Settings> Devices> [device name]> Cable Detect and select the "Enable" option, then confirm the selection.