Other than Smart Activation for Sense alerts not being enabled, the most common reason you may still be getting Sense alerts while you are home is that Primary devices have not been assigned to people or People profiles have not been created.
Your Home / Away status is based on when all assigned primary devices have disconnected from the network. If you have not assigned any primary devices to people, your current status will always be away and notifications will always go out if there is motion.
It is also possible that if all Primary devices chosen have disconnected from the network when they go to sleep (laptops, tablets, portable game consoles) or are powered off, your status will be set to away.
