If there is a constant red light we recommend yo restart your pill box. You can restart Ellie by inserting a small point (like a paper clip) into the left-most speaker hole located on the right side of the charging port. You will know you restarted the pill box if the red light starts flashing. You should then be able to connect via Bluetooth in the app (this will stop the red flashing light and synce the app with the pill box). On the main screen of your app, click the Bluetooth icon in the top right and reconnect to your device.