Make sure you can access this outlet until you have all Phones configured to it as each phone needs to scan the QR code.
The reason is each Modules QR code is unique it contains a password for communication.
The app is really self explanatory the manual really isn't requires it is just something I suggested so users that were sitting on the fence about getting a unit could have more info prior.
It is a good Idea to let the unit warm up prior to plugging in!