Hi @ctinamcj. It seems like the sleep tile is hidden from your iOS app dashboard. To hide and unhide tiles, from the dashboard tap Edit at the top of screen. Now scroll down to the very bottom of the screen to see the hidden tiles - they are the ones with empty cicles on the left hand side. Tap the circle next to each hidden tile you want shown. You can also rearange them by sliding them up or down. Then tap Done.
