iRobot on Twitter: "@leviz71 Great question, to remove a robot from the app simply navigate in the app to Settings ➔ Remove "Robot Name". We can also help keep your robot working.
How to reset your iRobot Roomba - Android Authority
Reset the Roomba battery 500 and 600 series
How to Reset or Reboot Your Roomba: Tips for Every Model
iRobot Roomba Reset: how to (factory) reset your Roomba - Vacuumtester
Rebooting or Resetting Your Robot
iRobot Roomba - How to change the language setting - YouTube
Rebooting or Resetting Your Robot
iRobot Roomba Reset: how to (factory) reset your Roomba - Vacuumtester