Install them first, but do not remove the clear plastic in the unit. Once you are ready get the application and open an account. The next step is to add the unit in the application, only then remove the plastic tap. You have to do this for every single unit, do not do all of them at once. After the dirt installation, the program will ask you if you want to add another unit, you press yes. Repeat this for every single unit. You might encounter the problem the unit not connecting to the router, it might take to attempts. Just remember, you are saving about $100 dollars per unit when you install them. Good luck